ASTROSAT CZTI

Data Quality Report

Orbit 56890

Creation date: 2026-04-04T01:48:21.354572
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_083T14_9000006564_56890cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_56890cztM0_level2_quad_clean.evt
Size (bytes)519,888,960113,267,520
Size495.8 MB 108.0 MB
Events in quadrant A3,946,220754,026
Events in quadrant B3,667,341807,066
Events in quadrant C4,123,023704,229
Events in quadrant D6,883,866606,108

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177270
B0168290
C0181610
D0261625

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8031821.021043%
B8032270.336155%
C80321521.892430%
D803199612.401942%

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 8031 8031 78 78 0.97% 0.97%
B 8032 8032 15 15 0.19% 0.19%
C 8032 8030 100 100 1.25% 1.25%
D 8031 8031 861 861 10.72% 10.72%

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 4 249 353078 1686.04 839 819 208.9
A 12 3 155105 738.47 839 819 208.9
A 3 14 54542 257.14 839 819 208.9
B 10 247 71242 396.48 831 801 177.7
B 0 245 50586 280.22 831 801 177.7
B 0 153 34801 191.37 831 801 177.7
C 13 3 338343 1540.69 798 791 219.1
C 12 249 266208 1211.45 798 791 219.1
C 1 16 116841 529.69 798 791 219.1
D 8 240 1389492 6381.61 760 723 217.6
D 2 249 1346575 6184.4 760 723 217.6
D 0 160 253408 1161.13 760 723 217.6

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