ASTROSAT CZTI

Data Quality Report

Orbit 20220713_A11_101T01_9000005238_level2

Creation date: 2022-07-21T14:37:02.366848
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A11_101T01_9000005238cztM0_level2_bc.evt modeM0/AS1A11_101T01_9000005238cztM0_level2_quad_clean.evt
Size (bytes)9,689,235,8402,644,764,480
Size9.0 GB 2.5 GB
Events in quadrant A50,324,68117,456,077
Events in quadrant B63,710,50814,791,318
Events in quadrant C70,537,14417,029,046
Events in quadrant D94,169,80016,039,186

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04476100
B06767870
C05212220
D06050170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A044180
B044160
C044240
D044170

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07860
B07870
C07870
D07870

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2158283840.177919%
B2154974348720.179863%
C21581462362.889525%
D215792135306.269927%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 304433 216180 37 37 0.01% 0.02%
B 304432 209448 1385 1385 0.45% 0.66%
C 304433 216078 691 691 0.23% 0.32%
D 304433 216087 6547 6547 2.15% 3.03%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 6931410 2895.92 10782 10603 2389.9
A 9 143 780149 322.01 10782 10603 2389.9
A 13 254 353017 143.28 10782 10603 2389.9
B 12 1 13823482 7758.27 8995 8784 1780.6
B 4 171 2944034 1648.42 8995 8784 1780.6
B 5 255 2425996 1357.5 8995 8784 1780.6
C 14 254 13888076 5892.87 10357 10279 2355.0
C 15 214 8724112 3700.12 10357 10279 2355.0
C 0 10 5589392 2369.04 10357 10279 2355.0
D 12 227 21754663 8802.69 10310 9997 2470.2
D 1 20 6158824 2489.17 10310 9997 2470.2
D 13 249 4055254 1637.6 10310 9997 2470.2

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter