ASTROSAT CZTI

Data Quality Report

Orbit 37277

Creation date: 2024-06-27T21:37:48.324391
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/AS1A10_103T03_9000005296_37277cztM0_level2.evt modeM0/AS1A10_103T03_9000005296_37277cztM0_level2_quad_clean.evt
Size (bytes)363,769,92089,994,240
Size346.9 MB 85.8 MB
Events in quadrant A2,618,892588,346
Events in quadrant B2,543,891595,362
Events in quadrant C2,631,187610,625
Events in quadrant D2,877,938576,118

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109233
B0108272
C0109082
D0119732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5062210.414856%
B5062220.434611%
C5062701.382853%
D50621112.192809%

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 7034 5063 7 7 0.10% 0.14%
B 7034 5063 12 12 0.17% 0.24%
C 7034 5063 62 62 0.88% 1.22%
D 7034 5063 121 121 1.72% 2.39%

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 260078 2273.03 572 561 114.2
A 9 143 82045 713.69 572 561 114.2
A 13 248 47615 412.13 572 561 114.2
B 5 172 91444 846.45 568 554 107.4
B 0 213 89406 827.47 568 554 107.4
B 0 190 72432 669.39 568 554 107.4
C 15 214 217093 1667.27 558 565 129.9
C 0 10 213775 1641.72 558 565 129.9
C 14 254 16714 124.35 558 565 129.9
D 13 249 411483 3077.19 557 543 133.5
D 12 218 154470 1152.63 557 543 133.5
D 10 199 39984 295.34 557 543 133.5

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