ASTROSAT CZTI

Data Quality Report

Orbit 26774

Creation date: 2024-06-27T19:32:41.863260
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/AS1A09_038T09_9000003860_26774cztM0_level2.evt modeM0/AS1A09_038T09_9000003860_26774cztM0_level2_quad_clean.evt
Size (bytes)315,964,80040,587,840
Size301.3 MB 38.7 MB
Events in quadrant A1,136,569301,400
Events in quadrant B4,662,166199,541
Events in quadrant C1,100,060298,063
Events in quadrant D2,516,173266,595

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A048420
B0153900
C046830
D090510

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A224410.044563%
B2244157970.365419%
C2244130.579323%
D224435915.998217%

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 2244 2244 0 0 0.00% 0.00%
B 2244 2244 1375 1375 61.27% 61.27%
C 2244 2244 0 0 0.00% 0.00%
D 2244 2244 313 313 13.95% 13.95%

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 13 113901 2103.32 263 258 54.0
A 13 34 5461 96.3 263 258 54.0
A 13 254 4109 71.27 263 258 54.0
B 0 189 3910003 104373.88 190 185 37.5
B 12 111 4319 110.36 190 185 37.5
B 0 229 4114 104.89 190 185 37.5
C 14 238 42146 661.99 262 264 63.3
C 2 16 36549 573.53 262 264 63.3
C 13 61 1769 23.79 262 264 63.3
D 7 80 1417662 24291.38 240 234 58.4
D 1 52 115900 1982.24 240 234 58.4
D 11 176 28481 484.09 240 234 58.4

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