ASTROSAT CZTI

Data Quality Report

Orbit 20793

Creation date: 2024-06-27T18:19:39.043255
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_013T01_9000003070_20793cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20793cztM0_level2_quad_clean.evt
Size (bytes)898,110,720163,941,120
Size856.5 MB 156.3 MB
Events in quadrant A5,898,3901,047,017
Events in quadrant B6,508,7231,032,308
Events in quadrant C5,950,7671,003,907
Events in quadrant D7,966,655988,644

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262033
B0278183
C0262233
D0320673

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12927360.278487%
B129271341.036590%
C12927860.665274%
D129272491.926201%

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 14217 12928 0 0 0.00% 0.00%
B 14217 12927 51 51 0.36% 0.39%
C 14217 12928 0 0 0.00% 0.00%
D 14217 12928 207 207 1.46% 1.60%

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 0 226 13197 38.09 1533 1502 307.1
A 3 137 12602 36.15 1533 1502 307.1
A 12 194 11052 31.1 1533 1502 307.1
B 7 220 186332 648.98 1514 1475 284.8
B 0 189 86649 299.02 1514 1475 284.8
B 0 197 82721 285.23 1514 1475 284.8
C 14 238 229479 671.98 1457 1466 339.3
C 8 128 12416 32.27 1457 1466 339.3
C 13 61 10475 26.55 1457 1466 339.3
D 1 52 924908 2566.57 1471 1427 359.8
D 1 20 504522 1398.22 1471 1427 359.8
D 5 222 331007 915.98 1471 1427 359.8

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