ASTROSAT CZTI

Data Quality Report

Orbit 21369

Creation date: 2024-06-27T18:26:59.032814
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/AS1A06_009T05_9000003154_21369cztM0_level2.evt modeM0/AS1A06_009T05_9000003154_21369cztM0_level2_quad_clean.evt
Size (bytes)532,848,960108,901,440
Size508.2 MB 103.9 MB
Events in quadrant A3,640,669709,115
Events in quadrant B3,782,439714,104
Events in quadrant C3,834,949686,094
Events in quadrant D4,371,918668,588

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156002
B0161182
C0163662
D0179552

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7475600.802676%
B74761081.444623%
C74761281.712146%
D7476861.150348%

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 8260 7477 0 0 0.00% 0.00%
B 8261 7478 4 4 0.05% 0.05%
C 8261 7478 5 5 0.06% 0.07%
D 8261 7478 55 55 0.67% 0.74%

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 5 168 119602 649.17 904 887 182.9
A 15 174 21028 110.14 904 887 182.9
A 13 254 12400 62.96 904 887 182.9
B 0 190 61645 352.7 900 877 172.3
B 0 245 33660 190.27 900 877 172.3
B 0 230 27870 156.67 900 877 172.3
C 3 233 358836 1779.35 857 862 201.2
C 14 238 133279 658.19 857 862 201.2
C 13 61 6241 26.74 857 862 201.2
D 12 235 488105 2293.94 868 844 212.4
D 1 52 281968 1323.48 868 844 212.4
D 7 38 133903 626.42 868 844 212.4

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