ASTROSAT CZTI

Data Quality Report

Orbit 42761

Creation date: 2024-06-27T22:43:54.911872
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/AS1A05_013T01_9000005822_42761cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42761cztM0_level2_quad_clean.evt
Size (bytes)304,395,84088,957,440
Size290.3 MB 84.8 MB
Events in quadrant A3,136,093593,105
Events in quadrant B2,526,371597,290
Events in quadrant C2,593,060588,876
Events in quadrant D2,602,853546,323

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124562
B0110372
C0110302
D0115032

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5251881.675871%
B5251380.723672%
C5251240.457056%
D5251340.647496%

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 7014 5252 62 62 0.88% 1.18%
B 7014 5252 25 25 0.36% 0.48%
C 7014 5252 21 21 0.30% 0.40%
D 7014 5251 32 32 0.46% 0.61%

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 10 83 586588 4902.93 580 570 119.5
A 13 248 169495 1413.31 580 570 119.5
A 15 237 55620 460.58 580 570 119.5
B 4 141 80475 707.44 577 562 113.0
B 0 229 76009 667.9 577 562 113.0
B 0 245 33739 293.7 577 562 113.0
C 15 214 218267 1630.55 566 570 133.5
C 14 254 142421 1062.46 566 570 133.5
C 3 233 11290 80.29 566 570 133.5
D 10 118 69850 498.46 566 550 139.0
D 9 19 54471 387.84 566 550 139.0
D 5 171 49932 355.19 566 550 139.0

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