ASTROSAT CZTI

Data Quality Report

Orbit 23277

Creation date: 2024-06-27T18:52:14.536039
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/AS1C05_005T01_9000003440_23277cztM0_level2.evt modeM0/AS1C05_005T01_9000003440_23277cztM0_level2_quad_clean.evt
Size (bytes)451,244,160111,689,280
Size430.3 MB 106.5 MB
Events in quadrant A3,143,535741,149
Events in quadrant B3,282,616760,071
Events in quadrant C3,434,460725,272
Events in quadrant D3,372,250711,547

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134602
B0138413
C0141292
D0141942

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6371761.192905%
B6370871.365777%
C63701342.103611%
D6370951.491366%

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 7506 6372 0 0 0.00% 0.00%
B 7505 6370 1 1 0.01% 0.02%
C 7505 6370 10 10 0.13% 0.16%
D 7505 6371 8 8 0.11% 0.13%

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 13 254 11281 64.74 814 798 161.9
A 0 226 7103 38.94 814 798 161.9
A 3 137 6844 37.34 814 798 161.9
B 4 206 71118 458.23 816 796 153.5
B 12 111 17631 109.7 816 796 153.5
B 11 111 15518 95.93 816 796 153.5
C 10 9 165595 899.32 795 802 183.2
C 14 238 126653 686.8 795 802 183.2
C 8 208 17392 90.54 795 802 183.2
D 1 239 169805 879.78 804 785 192.1
D 7 238 58225 298.98 804 785 192.1
D 12 233 49863 255.46 804 785 192.1

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