ASTROSAT CZTI

Data Quality Report

Orbit 15216

Creation date: 2024-06-27T17:05:26.159600
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/AS1T02_071T01_9000002246_15216cztM0_level2.evt modeM0/AS1T02_071T01_9000002246_15216cztM0_level2_quad_clean.evt
Size (bytes)636,243,840135,806,400
Size606.8 MB 129.5 MB
Events in quadrant A5,298,968904,139
Events in quadrant B5,619,428886,608
Events in quadrant C4,482,992918,151
Events in quadrant D3,362,599885,327

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0207843
B0217462
C0181692
D0154962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74582403.218021%
B74586648.903191%
C74581331.783320%
D7458660.884956%

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 8649 7461 157 157 1.82% 2.10%
B 8649 7461 376 376 4.35% 5.04%
C 8649 7461 13 13 0.15% 0.17%
D 8649 7461 8 8 0.09% 0.11%

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 0 253 1792841 10304.63 858 838 173.9
A 12 189 170127 973.47 858 838 173.9
A 13 248 35220 197.71 858 838 173.9
B 3 112 1836046 11592.98 838 814 158.3
B 0 229 282606 1780.05 838 814 158.3
B 0 245 79776 498.79 838 814 158.3
C 3 233 1089658 5615.32 847 851 193.9
C 4 254 72246 368.21 847 851 193.9
C 0 207 6995 31.69 847 851 193.9
D 8 195 60904 291.76 844 816 205.9
D 2 234 26486 124.64 844 816 205.9
D 2 33 24100 113.06 844 816 205.9

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