ASTROSAT CZTI

Data Quality Report

Orbit 04727

Creation date: 2024-06-27T14:46:06.510310
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/AS1G05_192T01_9000000594_04727cztM0_level2.evt modeM0/AS1G05_192T01_9000000594_04727cztM0_level2_quad_clean.evt
Size (bytes)233,919,36023,135,040
Size223.1 MB 22.1 MB
Events in quadrant A1,281,551133,896
Events in quadrant B1,416,948134,892
Events in quadrant C2,486,322120,137
Events in quadrant D1,722,448125,764

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A054192
B058101
C091651
D068301

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2579762.946879%
B2579732.830554%
C257937614.579294%
D25791425.506010%

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 3369 2580 12 12 0.36% 0.47%
B 3369 2580 0 0 0.00% 0.00%
C 3369 2580 246 246 7.30% 9.53%
D 3369 2580 49 49 1.45% 1.90%

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 0 118 31431 453.59 322 314 68.6
A 0 226 5872 81.02 322 314 68.6
A 8 15 4713 64.12 322 314 68.6
B 4 80 94204 1425.44 325 317 65.9
B 14 167 36875 555.04 325 317 65.9
B 15 204 12632 186.97 325 317 65.9
C 14 48 1317697 18610.42 295 295 70.8
C 8 128 6373 85.86 295 295 70.8
C 8 208 3234 41.52 295 295 70.8
D 13 235 368226 4925.32 303 292 74.7
D 13 137 82195 1096.39 303 292 74.7
D 2 136 80764 1077.23 303 292 74.7

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