ASTROSAT CZTI

Data Quality Report

Orbit 38465

Creation date: 2024-06-27T21:53:07.779823
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_38465cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38465cztM0_level2_quad_clean.evt
Size (bytes)449,732,16082,517,760
Size428.9 MB 78.7 MB
Events in quadrant A2,812,703603,123
Events in quadrant B2,509,653608,255
Events in quadrant C2,531,941580,608
Events in quadrant D8,383,028337,792

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116103
B0109882
C0107962
D0284802

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5270310.588235%
B5270150.284630%
C5270150.284630%
D5270219841.707780%

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 7063 5271 17 17 0.24% 0.32%
B 7063 5271 4 4 0.06% 0.08%
C 7063 5271 10 10 0.14% 0.19%
D 7062 5269 2139 2139 30.29% 40.60%

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 396443 3359.33 578 566 117.8
A 9 143 84501 712.25 578 566 117.8
A 12 189 49888 418.54 578 566 117.8
B 5 184 139030 1243.81 578 560 111.3
B 0 155 27613 243.0 578 560 111.3
B 0 230 20327 177.56 578 560 111.3
C 15 214 220886 1659.22 568 572 132.8
C 0 10 40828 303.17 568 572 132.8
C 14 254 35310 261.62 568 572 132.8
D 12 227 5524489 51842.19 435 422 106.6
D 2 16 425172 3986.19 435 422 106.6
D 13 249 237492 2224.85 435 422 106.6

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