ASTROSAT CZTI

Data Quality Report

Orbit 56519

Creation date: 2026-03-10T10:04:59.406441
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_060T01_9000006556_56519cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56519cztM0_level2_quad_clean.evt
Size (bytes)677,056,32085,988,160
Size645.7 MB 82.0 MB
Events in quadrant A7,760,479523,584
Events in quadrant B4,121,931647,237
Events in quadrant C7,691,681462,493
Events in quadrant D4,994,243524,348

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0275031
B0166971
C0272131
D0193133

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6386109817.193862%
B63862483.883495%
C6386154124.130911%
D63854086.389977%

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 7451 6386 1055 1055 14.16% 16.52%
B 7451 6386 171 171 2.29% 2.68%
C 7450 6386 1624 1624 21.80% 25.43%
D 7449 6385 371 371 4.98% 5.81%

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 2442680 15003.57 651 635 162.8
A 4 95 2316023 14225.41 651 635 162.8
A 12 16 197041 1206.69 651 635 162.8
B 4 206 893414 6114.0 681 659 146.0
B 7 252 92806 631.07 681 659 146.0
B 10 247 89067 605.46 681 659 146.0
C 15 230 4390757 26563.88 602 598 165.3
C 12 252 558938 3378.39 602 598 165.3
C 6 223 143924 867.23 602 598 165.3
D 2 249 761308 4103.68 644 616 185.4
D 7 96 721145 3887.02 644 616 185.4
D 8 129 237335 1277.02 644 616 185.4

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