ASTROSAT CZTI

Data Quality Report

Orbit 53442

Creation date: 2025-08-15T11:50:48.759182
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_002T06_9000006496_53442cztM0_level2.fits modeM0/AS1A14_002T06_9000006496_53442cztM0_level2_quad_clean.evt
Size (bytes)611,447,04094,294,080
Size583.1 MB 89.9 MB
Events in quadrant A4,277,398642,004
Events in quadrant B4,198,535713,532
Events in quadrant C9,606,378470,963
Events in quadrant D4,049,202577,218

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172282
B0170192
C0330722
D0163814

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64774346.700633%
B64773194.925120%
C6477197030.415316%
D64762563.953057%

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 7627 6479 230 230 3.02% 3.55%
B 7627 6479 68 68 0.89% 1.05%
C 7627 6478 1525 1525 19.99% 23.54%
D 7626 6478 170 170 2.23% 2.62%

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 15 174 1108568 6274.12 719 703 176.6
A 3 78 99925 561.92 719 703 176.6
A 4 249 70935 397.74 719 703 176.6
B 4 171 528092 3410.03 732 706 154.7
B 0 213 176994 1139.86 732 706 154.7
B 4 206 167888 1080.98 732 706 154.7
C 9 38 2680823 15241.95 642 636 175.8
C 15 224 2564147 14578.42 642 636 175.8
C 4 5 637488 3621.71 642 636 175.8
D 15 171 327819 1638.17 714 684 199.7
D 15 254 207897 1037.64 714 684 199.7
D 2 153 194556 970.84 714 684 199.7

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