ASTROSAT CZTI

Data Quality Report

Orbit 20020

Creation date: 2024-06-27T18:10:11.058149
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/AS1C04_001T01_9000002984_20020cztM0_level2.evt modeM0/AS1C04_001T01_9000002984_20020cztM0_level2_quad_clean.evt
Size (bytes)638,311,680104,840,640
Size608.7 MB 100.0 MB
Events in quadrant A6,840,752640,984
Events in quadrant B3,137,354723,890
Events in quadrant C3,097,681715,430
Events in quadrant D5,835,288660,701

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244461
B0132921
C0129451
D0216111

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6200127420.548387%
B6200420.677419%
C6201721.161103%
D620192214.868570%

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 7350 6201 1131 1131 15.39% 18.24%
B 7350 6201 4 4 0.05% 0.06%
C 7351 6202 0 0 0.00% 0.00%
D 7351 6202 925 925 12.58% 14.91%

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 14 238 3768193 26985.38 702 688 139.6
A 14 254 290057 2072.65 702 688 139.6
A 5 16 72998 517.93 702 688 139.6
B 0 189 53716 373.1 758 738 142.0
B 0 197 38142 263.42 758 738 142.0
B 0 190 36374 250.97 758 738 142.0
C 14 238 116801 673.4 745 751 172.3
C 3 233 60865 348.82 745 751 172.3
C 0 207 10561 56.92 745 751 172.3
D 7 238 1596564 9031.8 731 709 176.7
D 7 38 1041932 5892.84 731 709 176.7
D 12 218 116679 656.34 731 709 176.7

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