ASTROSAT CZTI

Data Quality Report

Orbit 31235

Creation date: 2024-06-27T20:25:23.991365
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/AS1C06_002T02_9000004518_31235cztM0_level2.evt modeM0/AS1C06_002T02_9000004518_31235cztM0_level2_quad_clean.evt
Size (bytes)527,328,00091,163,520
Size502.9 MB 86.9 MB
Events in quadrant A2,742,424629,354
Events in quadrant B5,434,315586,965
Events in quadrant C3,029,930590,582
Events in quadrant D4,399,573577,180

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012012
B012012
C012014
D012010

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126411114
B0231073079
C0134301200
D0191401822

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5405400.740056%
B537163211.766896%
C53961673.094885%
D5360941.753731%

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 7150 5449 0 0 0.00% 0.00%
B 7153 5396 379 379 5.30% 7.02%
C 7153 5441 47 47 0.66% 0.86%
D 7092 5397 41 41 0.58% 0.76%

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 9877 65.45 709 697 140.3
A 3 137 6497 41.35 709 697 140.3
A 0 226 6203 39.26 709 697 140.3
B 6 159 1404546 11277.02 659 645 124.5
B 14 167 1269383 10191.31 659 645 124.5
B 4 80 53546 424.93 659 645 124.5
C 0 10 198282 1304.22 656 659 151.5
C 14 238 110602 725.57 656 659 151.5
C 3 233 71056 464.59 656 659 151.5
D 8 195 1649062 9639.4 666 655 171.0
D 7 64 82011 475.75 666 655 171.0
D 2 250 64214 371.67 666 655 171.0

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