ASTROSAT CZTI

Data Quality Report

Orbit 53991

Creation date: 2025-09-22T18:15:21.777209
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_041T01_9000006510_53991cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_53991cztM0_level2_quad_clean.evt
Size (bytes)674,038,08076,032,000
Size642.8 MB 72.5 MB
Events in quadrant A3,045,084588,744
Events in quadrant B3,697,290619,153
Events in quadrant C4,115,445529,507
Events in quadrant D13,623,811143,269

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136051
B0153631
C0166891
D0446431

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60331432.370297%
B60332974.922924%
C60334226.994862%
D6034463876.864435%

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 7108 6034 92 92 1.29% 1.52%
B 7108 6034 226 226 3.18% 3.75%
C 7108 6034 384 384 5.40% 6.36%
D 7108 6033 4398 4398 61.87% 72.90%

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 444647 2806.64 636 619 158.2
A 0 8 28368 175.4 636 619 158.2
A 8 251 26306 162.36 636 619 158.2
B 0 213 492546 3685.3 629 607 133.5
B 2 249 312018 2332.89 629 607 133.5
B 5 185 183308 1368.68 629 607 133.5
C 1 241 560283 3397.35 607 600 164.7
C 13 3 546061 3311.02 607 600 164.7
C 15 233 345929 2096.19 607 600 164.7
D 8 176 10633367 112050.19 324 308 94.9
D 2 165 729059 7679.51 324 308 94.9
D 2 172 390127 4107.87 324 308 94.9

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