ASTROSAT CZTI

Data Quality Report

Orbit 22898

Creation date: 2024-06-27T18:47:14.148716
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/AS1A08_009T01_9000003382_22898cztM0_level2.evt modeM0/AS1A08_009T01_9000003382_22898cztM0_level2_quad_clean.evt
Size (bytes)19,321,9206,696,000
Size18.4 MB 6.4 MB
Events in quadrant A128,67441,151
Events in quadrant B150,01547,031
Events in quadrant C140,19742,573
Events in quadrant D142,69542,897

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01413
B01515
C01717
D0109

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086028074
B080877490
C079107338
D087788185

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07670
B07868
C07870
D07872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A26310.380228%
B29110.343643%
C27910.358423%
D29000.000000%

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 7635 467 0 0 0.00% 0.00%
B 7497 519 0 0 0.00% 0.00%
C 7322 495 0 0 0.00% 0.00%
D 7365 518 0 0 0.00% 0.00%

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 13 254 487 52.55 33 32 8.7
A 13 252 350 36.73 33 32 8.7
A 0 226 291 29.91 33 32 8.7
B 4 173 1309 136.4 37 36 9.3
B 10 247 897 92.25 37 36 9.3
B 12 111 840 86.15 37 36 9.3
C 14 238 5405 542.93 34 34 9.9
C 0 239 432 40.23 34 34 9.9
C 13 61 211 17.89 34 34 9.9
D 1 52 7108 677.16 35 33 10.4
D 13 153 1891 177.83 35 33 10.4
D 2 234 1109 102.99 35 33 10.4

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