ASTROSAT CZTI

Data Quality Report

Orbit 37200

Creation date: 2024-06-27T21:36:49.011739
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/AS1A11_079T01_9000005284_37200cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37200cztM0_level2_quad_clean.evt
Size (bytes)439,035,84056,678,400
Size418.7 MB 54.1 MB
Events in quadrant A2,946,343340,562
Events in quadrant B2,979,931341,256
Events in quadrant C3,446,936334,803
Events in quadrant D3,552,456317,206

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118783
B0120092
C0134662
D0141682

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5461100.183117%
B5461460.842337%
C5461631.153635%
D5461721.318440%

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 7344 5462 4 4 0.05% 0.07%
B 7344 5462 33 33 0.45% 0.60%
C 7344 5462 47 47 0.64% 0.86%
D 7344 5462 66 66 0.90% 1.21%

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 10 83 258467 1876.03 683 671 137.4
A 9 143 15371 106.97 683 671 137.4
A 10 255 14905 103.58 683 671 137.4
B 5 184 128404 998.31 677 662 128.0
B 0 213 81349 630.57 677 662 128.0
B 5 172 58793 454.3 677 662 128.0
C 10 49 531188 3531.11 653 660 150.2
C 15 214 235968 1566.17 653 660 150.2
C 0 10 61814 407.03 653 660 150.2
D 13 171 265870 1671.15 653 635 158.7
D 1 52 255936 1608.56 653 635 158.7
D 2 250 141377 886.76 653 635 158.7

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