ASTROSAT CZTI

Data Quality Report

Orbit 23189

Creation date: 2024-06-27T18:51:05.060518
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/AS1T03_175T01_9000003428_23189cztM0_level2.evt modeM0/AS1T03_175T01_9000003428_23189cztM0_level2_quad_clean.evt
Size (bytes)775,877,76074,499,840
Size739.9 MB 71.0 MB
Events in quadrant A3,097,116515,270
Events in quadrant B3,144,696527,157
Events in quadrant C3,496,503512,903
Events in quadrant D13,364,336291,173

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128751
B0130161
C0142531
D0437062

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5834801.371272%
B58351041.782348%
C58352133.650386%
D5834463679.465204%

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 7174 5834 2 2 0.03% 0.03%
B 7175 5836 1 1 0.01% 0.02%
C 7175 5836 36 36 0.50% 0.62%
D 7174 5834 3828 3828 53.36% 65.62%

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 6 16 26330 160.53 797 782 159.1
A 13 254 9103 52.29 797 782 159.1
A 0 226 6890 38.38 797 782 159.1
B 12 111 16973 108.0 798 781 149.9
B 0 190 15375 97.34 798 781 149.9
B 11 111 14949 94.5 798 781 149.9
C 0 10 194407 1089.61 775 785 177.7
C 14 238 124094 693.92 775 785 177.7
C 7 247 109240 610.33 775 785 177.7
D 1 52 9878924 85210.79 481 469 115.9
D 7 238 1043232 8994.79 481 469 115.9
D 12 233 261244 2249.42 481 469 115.9

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