ASTROSAT CZTI

Data Quality Report

Orbit 15834

Creation date: 2024-06-27T17:14:09.013057
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/AS1A04_143T01_9000002344_15834cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15834cztM0_level2_quad_clean.evt
Size (bytes)505,157,760104,929,920
Size481.8 MB 100.1 MB
Events in quadrant A3,917,285676,771
Events in quadrant B3,677,038709,059
Events in quadrant C3,657,101672,297
Events in quadrant D3,592,668652,545

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159553
B0152082
C0149072
D0149982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67031382.058780%
B6703821.223333%
C67031061.581381%
D6703450.671341%

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 9344 6706 44 44 0.47% 0.66%
B 9344 6706 3 3 0.03% 0.04%
C 9344 6706 5 5 0.05% 0.07%
D 9344 6706 9 9 0.10% 0.13%

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 15 239 364964 2053.24 876 857 177.3
A 14 239 146533 821.49 876 857 177.3
A 15 157 27126 148.13 876 857 177.3
B 6 36 37636 217.98 893 873 168.7
B 3 209 35144 203.2 893 873 168.7
B 4 173 32509 187.58 893 873 168.7
C 14 238 132048 662.37 856 864 198.1
C 3 233 102463 512.99 856 864 198.1
C 10 22 65861 328.18 856 864 198.1
D 1 52 222229 1050.1 862 838 210.8
D 7 223 87144 409.37 862 838 210.8
D 2 234 25256 115.82 862 838 210.8

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