ASTROSAT CZTI

Data Quality Report

Orbit 31052

Creation date: 2024-06-27T20:22:47.567915
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/AS1C06_002T01_9000004490_31052cztM0_level2.evt modeM0/AS1C06_002T01_9000004490_31052cztM0_level2_quad_clean.evt
Size (bytes)208,857,60044,835,840
Size199.2 MB 42.8 MB
Events in quadrant A1,115,241311,180
Events in quadrant B1,847,726307,301
Events in quadrant C1,207,450297,889
Events in quadrant D1,997,969276,232

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A048021
B071113
C050311
D075301

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2282110.482033%
B2281984.296361%
C2281903.945638%
D228123610.346339%

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 3012 2283 1 1 0.03% 0.04%
B 3011 2282 10 10 0.33% 0.44%
C 3011 2282 1 1 0.03% 0.04%
D 3011 2282 188 188 6.24% 8.24%

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 12 96 7788 126.84 286 279 59.2
A 13 254 4261 67.27 286 279 59.2
A 8 160 3439 53.38 286 279 59.2
B 6 159 647300 11585.96 284 276 55.8
B 4 80 38707 688.17 284 276 55.8
B 0 183 18614 328.37 284 276 55.8
C 0 10 60442 902.63 279 280 66.7
C 14 238 43721 651.76 279 280 66.7
C 2 114 5430 77.27 279 280 66.7
D 13 174 446997 6812.54 267 259 65.6
D 8 195 391119 5960.42 267 259 65.6
D 13 249 86927 1321.64 267 259 65.6

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