ASTROSAT CZTI

Data Quality Report

Orbit 31439

Creation date: 2024-06-27T20:28:31.102108
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/AS1C06_005T01_9000004580_31439cztM0_level2.evt modeM0/AS1C06_005T01_9000004580_31439cztM0_level2_quad_clean.evt
Size (bytes)867,971,520124,750,080
Size827.8 MB 119.0 MB
Events in quadrant A3,258,719998,509
Events in quadrant B14,220,279374,438
Events in quadrant C3,709,087995,204
Events in quadrant D4,671,326966,310

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01353623
B047079409
C01505445
D01821238

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01284

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6341170.268097%
B6305509480.793021%
C63353495.509077%
D63351101.736385%

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 7667 6352 0 0 0.00% 0.00%
B 7666 6304 4735 4735 61.77% 75.11%
C 7667 6350 1 1 0.01% 0.02%
D 7667 6349 54 54 0.70% 0.85%

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 13 254 12103 68.45 843 829 164.7
A 3 137 7735 41.93 843 829 164.7
A 0 226 7049 37.77 843 829 164.7
B 12 1 11760943 168893.17 376 368 69.6
B 6 159 807215 11587.1 376 368 69.6
B 4 80 80195 1146.39 376 368 69.6
C 14 238 208065 1074.29 836 846 192.9
C 14 254 98062 504.0 836 846 192.9
C 3 233 70309 360.12 836 846 192.9
D 1 52 656614 3326.74 837 819 197.1
D 8 195 454997 2303.97 837 819 197.1
D 12 218 243976 1233.5 837 819 197.1

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