ASTROSAT CZTI

Data Quality Report

Orbit 37541

Creation date: 2024-06-27T21:41:17.555936
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/AS1A10_113T02_9000005332_37541cztM0_level2.evt modeM0/AS1A10_113T02_9000005332_37541cztM0_level2_quad_clean.evt
Size (bytes)371,350,08054,391,680
Size354.1 MB 51.9 MB
Events in quadrant A2,863,227358,800
Events in quadrant B1,956,222357,872
Events in quadrant C1,917,044357,816
Events in quadrant D4,256,336308,552

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110751
B081621
C079781
D0151811

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3736250.669165%
B3736561.498929%
C3736330.883298%
D373663717.050321%

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 5080 3737 4 4 0.08% 0.11%
B 5080 3737 43 43 0.85% 1.15%
C 5080 3737 30 30 0.59% 0.80%
D 5079 3736 681 681 13.41% 18.23%

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 15 222 985495 11431.46 422 413 86.2
A 10 83 194346 2250.51 422 413 86.2
A 12 189 38380 440.59 422 413 86.2
B 5 172 148816 1817.38 415 403 81.7
B 5 255 40500 491.01 415 403 81.7
B 4 80 27795 335.43 415 403 81.7
C 15 214 159210 1653.89 407 409 96.0
C 14 254 126119 1309.25 407 409 96.0
C 0 10 30074 308.95 407 409 96.0
D 12 227 2015954 21002.2 389 379 96.0
D 12 233 362605 3774.38 389 379 96.0
D 1 52 89089 924.35 389 379 96.0

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