ASTROSAT CZTI

Data Quality Report

Orbit 26697

Creation date: 2024-06-27T19:31:53.995379
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/AS1A09_145T01_9000003848_26697cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26697cztM0_level2_quad_clean.evt
Size (bytes)850,654,08088,637,760
Size811.2 MB 84.5 MB
Events in quadrant A4,020,859584,459
Events in quadrant B8,238,754494,638
Events in quadrant C4,905,591559,650
Events in quadrant D8,067,619500,608

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166610
B0295500
C0194210
D0293270

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78261722.197802%
B7827230829.487671%
C78275977.627443%
D7827160820.544270%

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 8451 7828 3 3 0.04% 0.04%
B 8452 7828 1274 1274 15.07% 16.27%
C 8452 7829 183 183 2.17% 2.34%
D 8452 7829 936 936 11.07% 11.96%

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 0 13 92514 441.51 1017 997 207.3
A 13 254 14043 62.94 1017 997 207.3
A 3 137 9354 40.32 1017 997 207.3
B 0 189 4881803 30910.41 818 799 157.9
B 5 172 61050 381.55 818 799 157.9
B 3 112 36984 229.15 818 799 157.9
C 1 0 911682 4059.96 953 958 224.3
C 14 238 151397 670.65 953 958 224.3
C 3 233 69715 306.51 953 958 224.3
D 7 80 2911777 13024.3 916 891 223.5
D 1 52 924950 4134.56 916 891 223.5
D 2 250 624992 2792.44 916 891 223.5

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