ASTROSAT CZTI

Data Quality Report

Orbit 41352

Creation date: 2024-06-27T22:28:01.650627
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_105T01_9000005658_41352cztM0_level2.fits modeM0/AS1T05_105T01_9000005658_41352cztM0_level2_quad_clean.evt
Size (bytes)900,230,400162,466,560
Size858.5 MB 154.9 MB
Events in quadrant A5,608,6721,185,467
Events in quadrant B4,921,2721,201,311
Events in quadrant C6,041,9681,103,990
Events in quadrant D15,919,968685,457

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231494
B0219433
C0244373
D0546173

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10728230.214392%
B10728330.307606%
C107283613.365026%
D10728416738.842282%

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 13502 10729 7 7 0.05% 0.07%
B 13502 10727 11 11 0.08% 0.10%
C 13502 10727 346 346 2.56% 3.23%
D 13502 10727 4311 4311 31.93% 40.19%

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 947522 3865.14 1192 1166 244.8
A 12 189 44789 178.17 1192 1166 244.8
A 13 6 14301 53.65 1192 1166 244.8
B 0 190 143522 619.49 1181 1146 229.8
B 5 255 87079 373.9 1181 1146 229.8
B 0 229 31869 133.68 1181 1146 229.8
C 0 10 1138855 4306.25 1131 1137 264.2
C 15 214 443635 1674.85 1131 1137 264.2
C 10 22 15597 54.73 1131 1137 264.2
D 12 217 9724103 41104.9 964 936 236.5
D 1 52 965298 4076.86 964 936 236.5
D 13 249 962132 4063.47 964 936 236.5

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