ASTROSAT CZTI

Data Quality Report

Orbit 56509

Creation date: 2026-03-09T10:02:43.471588
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_56509cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56509cztM0_level2_quad_clean.evt
Size (bytes)440,588,160100,874,880
Size420.2 MB 96.2 MB
Events in quadrant A4,858,185641,579
Events in quadrant B3,976,426706,495
Events in quadrant C3,159,269636,781
Events in quadrant D3,776,918586,694

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192503
B0164733
C0145984
D0160873

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69272924.215389%
B69272012.901689%
C6926690.996246%
D6926941.357205%

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 7812 6928 210 210 2.69% 3.03%
B 7812 6928 63 63 0.81% 0.91%
C 7811 6927 3 3 0.04% 0.04%
D 7811 6927 56 56 0.72% 0.81%

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 1231138 6603.89 756 738 186.3
A 10 251 425405 2279.3 756 738 186.3
A 8 249 83040 441.74 756 738 186.3
B 0 213 395145 2394.56 760 732 164.7
B 4 206 178432 1078.85 760 732 164.7
B 4 171 87536 527.0 760 732 164.7
C 12 252 130369 633.44 755 748 204.6
C 13 3 23846 112.87 755 748 204.6
C 14 254 17939 84.01 755 748 204.6
D 2 249 306189 1467.02 743 709 208.2
D 3 12 289427 1386.52 743 709 208.2
D 5 173 51785 245.28 743 709 208.2

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