ASTROSAT CZTI

Data Quality Report

Orbit 22137

Creation date: 2024-06-27T18:37:19.260562
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/AS1T03_145T01_9000003278_22137cztM0_level2.evt modeM0/AS1T03_145T01_9000003278_22137cztM0_level2_quad_clean.evt
Size (bytes)543,461,760105,284,160
Size518.3 MB 100.4 MB
Events in quadrant A3,530,849685,980
Events in quadrant B3,752,546688,630
Events in quadrant C3,609,347657,560
Events in quadrant D5,056,346633,679

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155222
B0160602
C0156972
D0201402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7506740.985878%
B75071341.785001%
C75061021.358913%
D75063434.569678%

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 7831 7507 0 0 0.00% 0.00%
B 7832 7508 29 29 0.37% 0.39%
C 7831 7507 7 7 0.09% 0.09%
D 7831 7507 308 308 3.93% 4.10%

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 13936 70.67 915 894 184.6
A 3 137 8249 39.85 915 894 184.6
A 0 226 7918 38.06 915 894 184.6
B 3 64 98984 564.39 906 880 173.8
B 10 246 57769 327.28 906 880 173.8
B 12 111 21438 118.27 906 880 173.8
C 14 238 136259 664.73 866 870 203.7
C 10 22 58887 284.85 866 870 203.7
C 10 91 30894 147.41 866 870 203.7
D 1 52 1705694 8106.01 867 840 210.3
D 2 234 33342 154.54 867 840 210.3
D 2 133 21672 99.05 867 840 210.3

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