ASTROSAT CZTI

Data Quality Report

Orbit 19799

Creation date: 2024-06-27T18:07:08.474670
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/AS1A05_117T01_9000002958_19799cztM0_level2.evt modeM0/AS1A05_117T01_9000002958_19799cztM0_level2_quad_clean.evt
Size (bytes)690,799,68081,794,880
Size658.8 MB 78.0 MB
Events in quadrant A6,830,860491,135
Events in quadrant B3,479,715539,979
Events in quadrant C3,499,160510,181
Events in quadrant D6,684,196494,363

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246842
B0144232
C0143782
D0242722

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6311109917.414039%
B63111121.774679%
C6311991.568690%
D6312136421.609632%

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 8666 6311 873 873 10.07% 13.83%
B 8666 6311 26 26 0.30% 0.41%
C 8666 6312 4 4 0.05% 0.06%
D 8667 6313 1167 1167 13.46% 18.49%

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 6 16 3745722 23698.2 785 771 158.0
A 4 2 60847 380.16 785 771 158.0
A 0 226 6823 38.3 785 771 158.0
B 7 220 95316 606.81 832 814 155.7
B 4 216 35849 224.96 832 814 155.7
B 10 247 34511 216.37 832 814 155.7
C 3 233 267048 1448.28 797 804 183.8
C 14 238 125357 677.53 797 804 183.8
C 13 61 5548 25.8 797 804 183.8
D 7 238 3367071 18802.97 746 725 179.0
D 12 218 416734 2323.65 746 725 179.0
D 2 234 31444 171.58 746 725 179.0

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