ASTROSAT CZTI

Data Quality Report

Orbit 14600

Creation date: 2024-06-27T16:57:20.719288
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/AS1G08_055T02_9000002148_14600cztM0_level2.evt modeM0/AS1G08_055T02_9000002148_14600cztM0_level2_quad_clean.evt
Size (bytes)2,610,616,320321,526,080
Size2.4 GB 306.6 MB
Events in quadrant A30,096,5931,957,884
Events in quadrant B13,666,2702,021,022
Events in quadrant C15,007,0101,977,455
Events in quadrant D18,428,1831,872,216

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05660
B05660
C05660
D05660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01090656
B0580305
C0607265
D0734095

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2775513054.701856%
B277554011.444785%
C277552971.070077%
D2775519707.097820%

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 31491 27756 283 283 0.90% 1.02%
B 31491 27756 7 7 0.02% 0.03%
C 31491 27758 0 0 0.00% 0.00%
D 31491 27756 1325 1325 4.21% 4.77%

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 23 15096458 22418.95 3341 3268 673.2
A 0 226 927896 1373.41 3341 3268 673.2
A 1 162 379187 558.38 3341 3268 673.2
B 0 189 130243 196.54 3371 3287 646.0
B 12 111 78670 116.7 3371 3287 646.0
B 0 205 77096 114.26 3371 3287 646.0
C 3 233 2158569 2842.98 3285 3304 758.1
C 10 22 32868 39.0 3285 3304 758.1
C 13 61 23302 26.38 3285 3304 758.1
D 10 199 3956289 5280.89 3179 3104 748.6
D 12 110 1693368 2257.95 3179 3104 748.6
D 2 14 220745 290.74 3179 3104 748.6

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