ASTROSAT CZTI

Data Quality Report

Orbit 31371

Creation date: 2024-06-27T20:27:23.851772
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/AS1A10_101T01_9000004546_31371cztM0_level2.evt modeM0/AS1A10_101T01_9000004546_31371cztM0_level2_quad_clean.evt
Size (bytes)227,116,80023,889,600
Size216.6 MB 22.8 MB
Events in quadrant A1,400,903132,092
Events in quadrant B2,215,529130,621
Events in quadrant C1,460,394123,794
Events in quadrant D1,596,758123,392

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A059780
B089440
C061460
D065490

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A298310.033523%
B298380.268186%
C2984190.636729%
D298440.134048%

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 2983 2983 0 0 0.00% 0.00%
B 2983 2983 0 0 0.00% 0.00%
C 2984 2984 3 3 0.10% 0.10%
D 2984 2984 2 2 0.07% 0.07%

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 13 254 5648 72.02 362 355 73.5
A 3 137 3602 44.18 362 355 73.5
A 0 226 3016 36.21 362 355 73.5
B 6 159 778978 11160.5 354 345 69.8
B 4 80 23104 326.22 354 345 69.8
B 0 190 8537 117.42 354 345 69.8
C 14 238 60348 736.29 341 342 81.5
C 3 233 49429 602.31 341 342 81.5
C 14 254 8106 95.27 341 342 81.5
D 8 195 175868 2054.03 350 341 85.5
D 2 250 48664 565.48 350 341 85.5
D 10 203 33664 389.95 350 341 85.5

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