ASTROSAT CZTI

Data Quality Report

Orbit 17437

Creation date: 2024-06-27T17:36:31.685696
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_198T01_9000002578_17437cztM0_level2.evt modeM0/AS1A05_198T01_9000002578_17437cztM0_level2_quad_clean.evt
Size (bytes)322,738,56061,032,960
Size307.8 MB 58.2 MB
Events in quadrant A2,225,430387,473
Events in quadrant B2,318,077392,668
Events in quadrant C2,300,504376,059
Events in quadrant D2,616,759368,690

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A095871
B097371
C095961
D0107851

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4595170.369967%
B4595340.739935%
C4595340.739935%
D4595851.849837%

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 4595 4595 4 4 0.09% 0.09%
B 4595 4595 6 6 0.13% 0.13%
C 4595 4595 0 0 0.00% 0.00%
D 4595 4595 76 76 1.65% 1.65%

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 4 82180 721.53 555 544 113.1
A 6 16 6495 52.6 555 544 113.1
A 0 226 4758 37.25 555 544 113.1
B 7 220 39122 358.33 555 542 107.7
B 4 142 29125 265.48 555 542 107.7
B 0 197 24890 226.15 555 542 107.7
C 5 218 96003 770.58 527 530 123.9
C 14 238 82852 664.43 527 530 123.9
C 5 219 32635 259.12 527 530 123.9
D 13 232 243395 1869.06 533 519 129.9
D 13 189 183400 1407.37 533 519 129.9
D 11 176 69913 534.02 533 519 129.9

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