ASTROSAT CZTI

Data Quality Report

Orbit 57447

Creation date: 2026-05-11T13:43:46.687033
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_57447cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57447cztM0_level2_quad_clean.evt
Size (bytes)491,400,00095,302,080
Size468.6 MB 90.9 MB
Events in quadrant A3,058,087636,321
Events in quadrant B4,659,623644,208
Events in quadrant C5,383,519568,394
Events in quadrant D4,557,302559,625

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140941
B0186991
C0206791
D0183801

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6838420.614215%
B68395548.100600%
C68395808.480772%
D68393374.927621%

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 7583 6839 3 3 0.04% 0.04%
B 7584 6840 244 244 3.22% 3.57%
C 7584 6840 404 404 5.33% 5.91%
D 7584 6840 281 281 3.71% 4.11%

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 3 14 216998 1201.08 727 711 180.1
A 0 12 9620 49.47 727 711 180.1
A 13 254 9244 47.39 727 711 180.1
B 4 206 1173217 7868.9 694 668 149.0
B 5 185 481086 3224.05 694 668 149.0
B 10 247 87833 584.96 694 668 149.0
C 15 224 2107561 11584.35 671 666 181.9
C 1 16 217348 1191.38 671 666 181.9
C 14 254 192471 1054.6 671 666 181.9
D 15 142 633343 3290.55 686 656 192.3
D 2 249 433934 2253.44 686 656 192.3
D 8 240 261883 1358.62 686 656 192.3

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