ASTROSAT CZTI

Data Quality Report

Orbit 20220803_T05_046T01_9000005266_level2

Creation date: 2022-08-05T16:19:45.231072
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/AS1T05_046T01_9000005266cztM0_level2_bc.evt modeM0/AS1T05_046T01_9000005266cztM0_level2_quad_clean.evt
Size (bytes)1,850,028,480474,062,400
Size1.7 GB 452.1 MB
Events in quadrant A9,816,0353,026,117
Events in quadrant B13,498,4252,945,315
Events in quadrant C13,850,1612,894,969
Events in quadrant D16,153,3232,757,707

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0836150
B01018750
C0974490
D01095600

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08120
B08120
C08120
D08120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01610
B01610
C01610
D01610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A39817770.193385%
B3981715593.915413%
C398168732.192586%
D3981615663.933092%

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 61388 39826 5 5 0.01% 0.01%
B 61387 39817 76 76 0.12% 0.19%
C 61387 39815 207 207 0.34% 0.52%
D 61387 39816 257 257 0.42% 0.65%

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 1354408 2884.28 2118 2086 468.9
A 9 143 117681 246.55 2118 2086 468.9
A 13 6 110621 231.49 2118 2086 468.9
B 5 184 3690090 8942.82 2080 2038 412.4
B 5 172 807710 1953.6 2080 2038 412.4
B 5 255 192645 462.19 2080 2038 412.4
C 15 214 1595190 3476.19 2011 1997 458.3
C 0 10 1435462 3127.68 2011 1997 458.3
C 1 23 1176851 2563.41 2011 1997 458.3
D 12 235 1731564 3599.85 2028 1967 480.5
D 2 250 1697523 3529.0 2028 1967 480.5
D 2 153 1197713 2488.73 2028 1967 480.5

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