ASTROSAT CZTI

Data Quality Report

Orbit 33917

Creation date: 2024-06-27T20:54:09.483907
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/AS1T04_091T01_9000004842_33917cztM0_level2.evt modeM0/AS1T04_091T01_9000004842_33917cztM0_level2_quad_clean.evt
Size (bytes)645,151,68047,517,120
Size615.3 MB 45.3 MB
Events in quadrant A2,754,440288,540
Events in quadrant B5,492,864274,109
Events in quadrant C3,293,216283,829
Events in quadrant D7,644,583225,322

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112393
B0196232
C0128902
D0264262

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5229230.439855%
B5229115422.069229%
C5229971.855039%
D5229158830.369095%

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 7352 5230 13 13 0.18% 0.25%
B 7352 5230 936 936 12.73% 17.90%
C 7352 5230 75 75 1.02% 1.43%
D 7352 5230 1174 1174 15.97% 22.45%

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 15 169 159506 1201.56 661 649 132.2
A 7 16 15341 111.13 661 649 132.2
A 10 83 12568 90.15 661 649 132.2
B 4 251 2545602 22763.03 591 577 111.8
B 5 172 431284 3852.3 591 577 111.8
B 0 219 58278 516.09 591 577 111.8
C 0 10 307280 2087.64 639 646 146.9
C 15 214 228497 1551.26 639 646 146.9
C 0 207 157328 1066.73 639 646 146.9
D 10 118 1574509 11647.38 548 533 135.1
D 8 195 1379798 10206.52 548 533 135.1
D 12 235 965718 7142.34 548 533 135.1

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