ASTROSAT CZTI

Data Quality Report

Orbit 35470

Creation date: 2022-04-21T02:55:16.814516
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_095T06_9000005078_35470cztM0_level2.evt modeM0/AS1A11_095T06_9000005078_35470cztM0_level2_quad_clean.evt
Size (bytes)323,424,00067,268,160
Size308.4 MB 64.2 MB
Events in quadrant A2,154,476434,932
Events in quadrant B2,173,329441,613
Events in quadrant C2,802,488427,416
Events in quadrant D2,353,324411,938

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A092601
B094011
C0110191
D099141

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A456330.065746%
B4563260.569801%
C4563881.928556%
D4563310.679378%

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 5967 4564 0 0 0.00% 0.00%
B 5967 4564 15 15 0.25% 0.33%
C 5967 4564 63 63 1.06% 1.38%
D 5967 4564 23 23 0.39% 0.50%

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 79959 724.15 532 520 109.7
A 13 6 9844 85.0 532 520 109.7
A 13 254 6204 51.81 532 520 109.7
B 5 172 73519 711.44 526 511 102.6
B 5 236 29470 282.19 526 511 102.6
B 12 111 12855 120.29 526 511 102.6
C 0 207 353681 2936.08 513 516 120.3
C 0 10 250819 2080.93 513 516 120.3
C 15 214 184974 1533.52 513 516 120.3
D 13 249 79592 619.64 517 502 127.6
D 8 195 54242 421.03 517 502 127.6
D 12 6 42055 325.55 517 502 127.6

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