ASTROSAT CZTI

Data Quality Report

Orbit 19361

Creation date: 2024-06-27T18:01:49.898751
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/AS1A05_204T01_9000002856_19361cztM0_level2.evt modeM0/AS1A05_204T01_9000002856_19361cztM0_level2_quad_clean.evt
Size (bytes)661,222,08077,232,960
Size630.6 MB 73.7 MB
Events in quadrant A3,519,148473,717
Events in quadrant B3,617,498475,354
Events in quadrant C3,556,988455,058
Events in quadrant D8,830,768419,208

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151772
B0153892
C0152223
D0315132

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74041291.742301%
B74051542.079676%
C74041441.944895%
D7404110214.883847%

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 8879 7404 0 0 0.00% 0.00%
B 8880 7405 3 3 0.03% 0.04%
C 8879 7404 0 0 0.00% 0.00%
D 8879 7404 905 905 10.19% 12.22%

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 8522 40.98 911 891 186.2
A 0 226 7890 37.59 911 891 186.2
A 3 137 7418 35.05 911 891 186.2
B 3 64 24187 133.33 906 884 174.8
B 12 111 21665 118.9 906 884 174.8
B 11 111 19340 105.6 906 884 174.8
C 14 238 133957 650.44 870 875 204.6
C 3 233 29100 137.95 870 875 204.6
C 13 61 6095 25.51 870 875 204.6
D 10 66 3231116 15537.09 842 816 207.9
D 7 238 2058340 9896.28 842 816 207.9
D 1 52 123743 591.25 842 816 207.9

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