ASTROSAT CZTI

Data Quality Report

Orbit 15551

Creation date: 2024-06-27T17:10:13.309252
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/AS1G08_030T01_9000002302_15551cztM0_level2.evt modeM0/AS1G08_030T01_9000002302_15551cztM0_level2_quad_clean.evt
Size (bytes)494,732,160104,287,680
Size471.8 MB 99.5 MB
Events in quadrant A3,466,067675,305
Events in quadrant B3,712,826682,354
Events in quadrant C3,543,724646,815
Events in quadrant D3,756,512637,798

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152968
B0159117
C01537313
D0162654

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7411530.715153%
B7411831.119957%
C74081221.646868%
D74121011.362655%

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 7744 7415 1 1 0.01% 0.01%
B 7743 7414 10 10 0.13% 0.13%
C 7741 7411 0 0 0.00% 0.00%
D 7743 7414 50 50 0.65% 0.67%

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 15 249 23771 126.73 894 873 180.7
A 0 226 7885 38.81 894 873 180.7
A 12 194 6545 31.39 894 873 180.7
B 3 64 98154 561.5 893 869 173.3
B 0 189 50427 286.03 893 869 173.3
B 4 48 20789 114.97 893 869 173.3
C 14 238 141021 697.09 858 864 201.1
C 3 233 23254 111.36 858 864 201.1
C 10 22 20557 97.95 858 864 201.1
D 5 222 129540 563.78 865 844 228.3
D 13 172 119394 519.33 865 844 228.3
D 2 16 78997 342.36 865 844 228.3

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