ASTROSAT CZTI

Data Quality Report

Orbit 38402

Creation date: 2024-06-27T21:52:16.133630
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/AS1A12_018T01_9000005386_38402cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38402cztM0_level2_quad_clean.evt
Size (bytes)336,504,96091,681,920
Size320.9 MB 87.4 MB
Events in quadrant A3,044,584633,652
Events in quadrant B2,501,284647,528
Events in quadrant C2,473,475604,136
Events in quadrant D4,040,473534,088

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121532
B0105861
C0103261
D0153291

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5091721.414260%
B5091150.294638%
C509130.058928%
D50913376.619525%

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 6973 5092 53 53 0.76% 1.04%
B 6973 5092 8 8 0.11% 0.16%
C 6973 5092 0 0 0.00% 0.00%
D 6973 5092 281 281 4.03% 5.52%

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 364276 3072.21 591 581 118.4
A 13 248 159657 1343.75 591 581 118.4
A 9 143 122679 1031.39 591 581 118.4
B 0 183 67893 607.49 584 571 110.8
B 15 85 30238 267.7 584 571 110.8
B 0 230 26891 237.5 584 571 110.8
C 15 214 214991 1635.36 571 574 131.1
C 12 249 9427 67.52 571 574 131.1
C 0 10 6255 43.33 571 574 131.1
D 12 227 559288 4131.64 561 546 135.2
D 12 6 284544 2100.03 561 546 135.2
D 2 16 259927 1918.0 561 546 135.2

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