ASTROSAT CZTI

Data Quality Report

Orbit 23942

Creation date: 2024-06-27T19:00:18.614546
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/AS1A07_101T02_9000003544_23942cztM0_level2.evt modeM0/AS1A07_101T02_9000003544_23942cztM0_level2_quad_clean.evt
Size (bytes)516,499,20071,824,320
Size492.6 MB 68.5 MB
Events in quadrant A3,448,411436,459
Events in quadrant B3,570,894443,323
Events in quadrant C3,727,123430,574
Events in quadrant D4,467,868424,116

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143022
B0146292
C0151822
D0177622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63021382.189781%
B63021552.459537%
C63022213.506823%
D63022704.284354%

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 7577 6303 0 0 0.00% 0.00%
B 7577 6303 4 4 0.05% 0.06%
C 7577 6303 3 3 0.04% 0.05%
D 7577 6303 98 98 1.29% 1.55%

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 9285 47.6 895 881 176.6
A 0 226 7839 39.41 895 881 176.6
A 3 137 7227 35.94 895 881 176.6
B 0 189 60570 363.73 884 867 164.1
B 0 197 26202 154.35 884 867 164.1
B 12 111 18755 108.98 884 867 164.1
C 10 9 190981 968.64 861 869 196.3
C 14 238 137326 695.26 861 869 196.3
C 0 10 40978 204.36 861 869 196.3
D 8 195 577474 2761.23 867 845 208.8
D 12 218 323101 1543.14 867 845 208.8
D 1 52 127383 605.94 867 845 208.8

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