ASTROSAT CZTI

Data Quality Report

Orbit 57347

Creation date: 2026-05-04T18:26:40.275384
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_102T01_9000006572_57347cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57347cztM0_level2_quad_clean.evt
Size (bytes)428,322,24092,649,600
Size408.5 MB 88.4 MB
Events in quadrant A2,849,718613,668
Events in quadrant B3,329,322653,129
Events in quadrant C4,975,309554,862
Events in quadrant D4,206,988540,393

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131241
B0142701
C0192151
D0168961

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6349761.197039%
B63501161.826772%
C63504747.464567%
D63502974.677165%

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 7314 6350 3 3 0.04% 0.05%
B 7315 6351 25 25 0.34% 0.39%
C 7315 6351 355 355 4.85% 5.59%
D 7315 6351 208 208 2.84% 3.28%

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 0 12 54307 312.41 696 679 171.7
A 3 14 50344 289.33 696 679 171.7
A 10 251 12555 69.18 696 679 171.7
B 5 185 203834 1396.42 681 655 145.5
B 7 252 122547 837.75 681 655 145.5
B 4 171 83187 567.23 681 655 145.5
C 15 224 1662413 9346.86 647 640 177.8
C 13 3 362213 2033.72 647 640 177.8
C 14 254 170462 955.19 647 640 177.8
D 8 240 1126594 6040.82 664 633 186.4
D 2 249 192966 1031.87 664 633 186.4
D 3 224 75753 403.02 664 633 186.4

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