ASTROSAT CZTI

Data Quality Report

Orbit 21731

Creation date: 2024-06-27T18:31:34.367241
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/AS1A07_010T04_9000003220_21731cztM0_level2.evt modeM0/AS1A07_010T04_9000003220_21731cztM0_level2_quad_clean.evt
Size (bytes)339,082,56052,954,560
Size323.4 MB 50.5 MB
Events in quadrant A3,393,688309,540
Events in quadrant B1,985,400340,688
Events in quadrant C2,068,634330,618
Events in quadrant D2,532,053323,507

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131030
B087180
C089340
D0104060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A423658913.904627%
B423680.188857%
C4237110.259618%
D4237831.958933%

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 4236 4236 451 451 10.65% 10.65%
B 4236 4236 5 5 0.12% 0.12%
C 4237 4237 0 0 0.00% 0.00%
D 4237 4237 81 81 1.91% 1.91%

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 15 236 1610757 17166.19 462 451 93.8
A 13 254 5949 58.61 462 451 93.8
A 0 226 4007 37.91 462 451 93.8
B 3 64 50377 541.66 477 465 92.1
B 0 230 41308 443.24 477 465 92.1
B 0 189 13234 138.57 477 465 92.1
C 8 208 184057 1679.05 464 465 109.3
C 14 238 74744 679.32 464 465 109.3
C 13 61 3333 26.23 464 465 109.3
D 14 35 552387 4817.35 467 453 114.6
D 12 235 118054 1026.44 467 453 114.6
D 2 136 25691 220.28 467 453 114.6

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