ASTROSAT CZTI

Data Quality Report

Orbit 24500

Creation date: 2024-06-27T19:06:37.460184
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/AS1T03_183T01_9000003606_24500cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24500cztM0_level2_quad_clean.evt
Size (bytes)1,274,414,400184,740,480
Size1.2 GB 176.2 MB
Events in quadrant A7,325,0521,256,484
Events in quadrant B16,050,8071,103,601
Events in quadrant C5,801,3291,232,298
Events in quadrant D8,616,1051,177,396

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0293842
B0559212
C0249602
D0335852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02420
B02420
C02420
D02420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A119134794.020818%
B11913351329.488794%
C119132572.157307%
D119146305.287897%

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 13168 11913 160 160 1.22% 1.34%
B 13168 11913 2155 2155 16.37% 18.09%
C 13168 11914 12 12 0.09% 0.10%
D 13169 11914 415 415 3.15% 3.48%

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 14 111 1930847 6833.98 1398 1364 282.3
A 13 254 18604 61.06 1398 1364 282.3
A 3 137 12862 40.72 1398 1364 282.3
B 3 64 11052453 46254.53 1266 1230 238.9
B 12 111 29511 118.37 1266 1230 238.9
B 11 111 26034 103.81 1266 1230 238.9
C 2 16 274825 867.25 1356 1361 315.3
C 14 238 218558 688.8 1356 1361 315.3
C 8 128 11458 32.02 1356 1361 315.3
D 1 52 1379234 4144.71 1356 1313 332.5
D 12 218 1252157 3762.47 1356 1313 332.5
D 9 1 494382 1483.12 1356 1313 332.5

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