ASTROSAT CZTI

Data Quality Report

Orbit 39474

Creation date: 2024-06-27T22:05:02.834798
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_010T05_9000005484_39474cztM0_level2.fits modeM0/AS1C06_010T05_9000005484_39474cztM0_level2_quad_clean.evt
Size (bytes)139,720,32037,581,120
Size133.2 MB 35.8 MB
Events in quadrant A1,258,997254,339
Events in quadrant B956,637265,834
Events in quadrant C1,416,237244,535
Events in quadrant D1,375,637222,851

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050112
B041841
C055451
D054911

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A208390.432069%
B208310.048008%
C2083653.120499%
D2083994.752760%

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 4026 2084 6 6 0.15% 0.29%
B 4026 2084 0 0 0.00% 0.00%
C 4026 2084 50 50 1.24% 2.40%
D 4026 2084 81 81 2.01% 3.89%

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 192571 3830.97 240 235 50.2
A 15 222 96589 1919.19 240 235 50.2
A 15 174 27392 540.92 240 235 50.2
B 12 111 5506 112.34 241 235 46.9
B 0 230 5445 111.04 241 235 46.9
B 11 111 5187 105.54 241 235 46.9
C 15 208 366760 6673.93 232 234 54.9
C 15 214 88303 1603.61 232 234 54.9
C 9 187 45632 826.63 232 234 54.9
D 12 227 249191 4333.56 230 223 57.5
D 1 52 76960 1335.69 230 223 57.5
D 2 249 45902 795.09 230 223 57.5

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