ASTROSAT CZTI

Data Quality Report

Orbit 17446

Creation date: 2024-06-27T17:36:39.870691
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/AS1A05_068T01_9000002580_17446cztM0_level2.evt modeM0/AS1A05_068T01_9000002580_17446cztM0_level2_quad_clean.evt
Size (bytes)526,705,92096,459,840
Size502.3 MB 92.0 MB
Events in quadrant A3,565,380614,642
Events in quadrant B3,659,348612,654
Events in quadrant C3,829,351588,692
Events in quadrant D4,389,784585,217

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155251
B0157211
C0159251
D0180271

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7478941.257021%
B74791351.805054%
C74791612.152694%
D74781211.618080%

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 7603 7480 0 0 0.00% 0.00%
B 7604 7481 0 0 0.00% 0.00%
C 7604 7481 0 0 0.00% 0.00%
D 7603 7480 68 68 0.89% 0.91%

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 0 226 8086 37.99 926 907 189.0
A 3 137 6941 31.93 926 907 189.0
A 12 194 6701 30.66 926 907 189.0
B 12 111 21325 114.86 920 896 177.9
B 11 111 18392 98.37 920 896 177.9
B 14 111 15272 80.83 920 896 177.9
C 5 218 135229 648.29 882 887 207.2
C 14 238 133131 638.16 882 887 207.2
C 3 233 94132 449.97 882 887 207.2
D 13 189 400407 1812.07 894 867 220.5
D 13 232 383933 1737.36 894 867 220.5
D 11 176 56192 250.92 894 867 220.5

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