ASTROSAT CZTI

Data Quality Report

Orbit 56382

Creation date: 2026-02-28T21:46:10.323919
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/AS1A14_083T05_9000006554_56382cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56382cztM0_level2_quad_clean.evt
Size (bytes)867,461,76094,207,680
Size827.3 MB 89.8 MB
Events in quadrant A5,520,507677,751
Events in quadrant B4,083,879774,999
Events in quadrant C4,695,696677,655
Events in quadrant D17,219,379191,500

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218540
B0174990
C0195170
D0563847

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76245487.187828%
B76241181.547744%
C76252543.331148%
D7624569774.724554%

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 7624 7624 480 480 6.30% 6.30%
B 7624 7624 47 47 0.62% 0.62%
C 7625 7625 217 217 2.85% 2.85%
D 7624 7624 5823 5823 76.38% 76.38%

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 7 64 852151 4307.01 804 783 197.7
A 3 79 358477 1809.55 804 783 197.7
A 12 3 341823 1725.3 804 783 197.7
B 5 172 200484 1136.07 818 786 175.8
B 1 223 137296 776.6 818 786 175.8
B 5 185 110717 625.39 818 786 175.8
C 12 254 517022 2377.69 790 785 217.1
C 15 230 344897 1584.92 790 785 217.1
C 12 252 308550 1417.51 790 785 217.1
D 8 129 13537044 83592.94 565 538 161.9
D 2 249 576096 3554.28 565 538 161.9
D 12 3 531734 3280.33 565 538 161.9

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