ASTROSAT CZTI

Data Quality Report

Orbit 35061

Creation date: 2022-03-24T17:32:45.927742
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/AS1A10_057T01_9000005022_35061cztM0_level2.evt modeM0/AS1A10_057T01_9000005022_35061cztM0_level2_quad_clean.evt
Size (bytes)445,927,68063,305,280
Size425.3 MB 60.4 MB
Events in quadrant A2,403,090407,793
Events in quadrant B2,936,564405,781
Events in quadrant C2,713,209399,556
Events in quadrant D5,111,622351,675

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103623
B0118972
C0108902
D0187322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A501850.099641%
B50181843.666800%
C5018651.295337%
D50184138.230371%

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 7111 5019 1 1 0.01% 0.02%
B 7111 5019 158 158 2.22% 3.15%
C 7111 5019 58 58 0.82% 1.16%
D 7111 5019 523 523 7.35% 10.42%

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 78842 664.6 589 578 117.8
A 9 143 16724 137.11 589 578 117.8
A 13 6 10561 84.77 589 578 117.8
B 5 172 351560 3199.97 578 562 109.7
B 5 200 258970 2355.85 578 562 109.7
B 4 232 23101 205.48 578 562 109.7
C 15 214 209814 1564.59 579 584 133.7
C 0 10 186842 1392.81 579 584 133.7
C 12 250 28338 207.54 579 584 133.7
D 8 195 1139623 8495.8 559 545 134.1
D 12 227 367962 2740.38 559 545 134.1
D 13 249 363535 2707.36 559 545 134.1

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