ASTROSAT CZTI

Data Quality Report

Orbit 56539

Creation date: 2026-03-11T10:41:10.992331
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_56539cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56539cztM0_level2_quad_clean.evt
Size (bytes)488,214,720105,672,960
Size465.6 MB 100.8 MB
Events in quadrant A5,223,349666,271
Events in quadrant B4,104,550740,614
Events in quadrant C3,621,750665,544
Events in quadrant D4,540,232606,511

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208592
B0172782
C0164222
D0188272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74884786.383547%
B74883134.180021%
C74892172.897583%
D74893674.900521%

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 7853 7490 256 256 3.26% 3.42%
B 7853 7490 35 35 0.45% 0.47%
C 7854 7491 40 40 0.51% 0.53%
D 7854 7491 204 204 2.60% 2.72%

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 13 153 603664 2954.83 826 807 204.0
A 4 249 457564 2238.74 826 807 204.0
A 10 251 450576 2204.49 826 807 204.0
B 4 206 340869 1909.05 824 791 178.1
B 5 185 118771 662.29 824 791 178.1
B 4 171 103064 574.12 824 791 178.1
C 6 223 126475 556.17 828 821 225.9
C 14 254 91509 401.4 828 821 225.9
C 13 3 72012 315.1 828 821 225.9
D 8 129 503238 2215.36 810 776 226.8
D 8 240 292343 1285.52 810 776 226.8
D 5 113 186379 818.33 810 776 226.8

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