ASTROSAT CZTI

Data Quality Report

Orbit 12601

Creation date: 2024-06-27T16:29:49.919268
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_071T01_9000001874_12601cztM0_level2.evt modeM0/AS1G08_071T01_9000001874_12601cztM0_level2_quad_clean.evt
Size (bytes)2,246,673,600355,227,840
Size2.1 GB 338.8 MB
Events in quadrant A13,941,3612,194,344
Events in quadrant B18,548,1472,200,266
Events in quadrant C14,109,8842,223,815
Events in quadrant D19,401,9312,063,265

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06120
B06120
C06120
D06120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0619535
B0748154
C0632774
D0787934

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A302055921.959940%
B3020516285.389836%
C302055331.764609%
D3020520116.657838%

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 32341 30206 3 3 0.01% 0.01%
B 32341 30206 808 808 2.50% 2.67%
C 32341 30206 122 122 0.38% 0.40%
D 32341 30206 1468 1468 4.54% 4.86%

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 12 189 177888 241.27 3549 3460 722.9
A 8 15 44229 56.39 3549 3460 722.9
A 3 1 34185 42.5 3549 3460 722.9
B 4 239 2963303 4435.57 3505 3412 667.3
B 3 64 1401638 2095.32 3505 3412 667.3
B 0 214 140783 205.86 3505 3412 667.3
C 15 208 445984 557.54 3449 3455 793.7
C 14 234 211698 262.36 3449 3455 793.7
C 13 61 25260 27.47 3449 3455 793.7
D 1 52 3556686 4496.38 3326 3221 790.3
D 10 157 2527811 3194.49 3326 3221 790.3
D 10 199 325374 407.64 3326 3221 790.3

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