ASTROSAT CZTI

Data Quality Report

Orbit 09671

Creation date: 2024-06-27T15:49:12.625995
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/AS1A02_198T01_9000001376_09671cztM0_level2.evt modeM0/AS1A02_198T01_9000001376_09671cztM0_level2_quad_clean.evt
Size (bytes)204,667,20038,378,880
Size195.2 MB 36.6 MB
Events in quadrant A1,456,775238,756
Events in quadrant B1,527,836241,873
Events in quadrant C1,422,749237,857
Events in quadrant D1,585,161230,187

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C081
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0642
B0640
C0640
D0644

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06400157
B06593159
C06360158
D06911172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2988973.246319%
B2987933.113492%
C2986782.612190%
D29861264.219692%

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 3918 3060 0 0 0.00% 0.00%
B 3918 3057 1 1 0.03% 0.03%
C 3918 3061 0 0 0.00% 0.00%
D 3918 3061 30 30 0.77% 0.98%

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 1 162 15175 190.92 370 362 77.6
A 1 178 5402 64.96 370 362 77.6
A 1 161 4986 59.6 370 362 77.6
B 10 252 44492 607.7 371 362 72.6
B 0 219 11676 155.8 371 362 72.6
B 15 85 10642 141.56 371 362 72.6
C 13 61 2807 28.7 364 365 85.1
C 14 234 959 6.98 364 365 85.1
C 3 202 915 6.46 364 365 85.1
D 12 233 94057 998.5 359 350 93.8
D 2 152 81398 863.61 359 350 93.8
D 8 195 17767 185.59 359 350 93.8

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