ASTROSAT CZTI

Data Quality Report

Orbit 36246

Creation date: 2022-06-13T16:27:30.110302
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_071T37_9000005180_36246cztM0_level2.evt modeM0/AS1A10_071T37_9000005180_36246cztM0_level2_quad_clean.evt
Size (bytes)275,803,20030,539,520
Size263.0 MB 29.1 MB
Events in quadrant A1,772,514173,276
Events in quadrant B1,983,986179,124
Events in quadrant C1,874,408171,394
Events in quadrant D2,487,614157,232

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A073052
B079561
C075241
D096451

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A343090.262391%
B3430431.253644%
C3430230.670554%
D34301414.110787%

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 5493 3431 0 0 0.00% 0.00%
B 5493 3431 27 27 0.49% 0.79%
C 5493 3431 12 12 0.22% 0.35%
D 5493 3431 127 127 2.31% 3.70%

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 97321 1115.26 428 421 86.9
A 9 143 10729 118.64 428 421 86.9
A 13 6 9243 101.54 428 421 86.9
B 5 236 156959 1888.15 428 419 82.9
B 5 172 104842 1259.53 428 419 82.9
B 8 128 22197 262.68 428 419 82.9
C 15 214 142315 1443.89 416 420 98.3
C 0 10 83740 847.84 416 420 98.3
C 0 207 23153 231.33 416 420 98.3
D 12 6 637260 6430.71 404 392 99.0
D 13 171 76271 766.18 404 392 99.0
D 13 249 54702 548.39 404 392 99.0

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