ASTROSAT CZTI

Data Quality Report

Orbit 56315

Creation date: 2026-02-24T09:06:23.731410
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_049T01_9000006552_56315cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56315cztM0_level2_quad_clean.evt
Size (bytes)850,389,12083,113,920
Size811.0 MB 79.3 MB
Events in quadrant A13,848,166272,369
Events in quadrant B7,916,860564,584
Events in quadrant C3,417,040629,506
Events in quadrant D5,754,734562,273

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0459612
B0283182
C0154492
D0219682

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6998435262.189197%
B6998174024.864247%
C6998711.014576%
D69994846.915274%

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 8858 6999 3914 3914 44.19% 55.92%
B 8858 7000 1380 1380 15.58% 19.71%
C 8858 7000 37 37 0.42% 0.53%
D 8859 7001 501 501 5.66% 7.16%

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 32 6641739 50854.45 515 502 130.6
A 4 95 2419610 18524.02 515 502 130.6
A 3 62 1277927 9781.72 515 502 130.6
B 5 172 3654128 26389.54 654 630 138.4
B 5 185 1151030 8309.44 654 630 138.4
B 0 231 189762 1366.12 654 630 138.4
C 15 148 241487 1216.43 720 713 197.9
C 12 252 236549 1191.48 720 713 197.9
C 9 237 35821 177.37 720 713 197.9
D 8 240 1097041 5551.06 692 660 197.5
D 8 160 1023337 5177.89 692 660 197.5
D 2 249 540384 2732.66 692 660 197.5

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