ASTROSAT CZTI

Data Quality Report

Orbit 19265

Creation date: 2024-06-27T18:00:49.639543
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_088T02_9000002850_19265cztM0_level2.evt modeM0/AS1A05_088T02_9000002850_19265cztM0_level2_quad_clean.evt
Size (bytes)483,120,00098,936,640
Size460.7 MB 94.4 MB
Events in quadrant A3,427,684638,459
Events in quadrant B3,510,977656,410
Events in quadrant C3,883,410640,265
Events in quadrant D3,389,076629,024

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142342
B0144922
C0157722
D0141252

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61981392.242659%
B61991552.500403%
C61982213.565666%
D61981161.871571%

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 8863 6198 0 0 0.00% 0.00%
B 8864 6200 0 0 0.00% 0.00%
C 8863 6198 20 20 0.23% 0.32%
D 8863 6198 3 3 0.03% 0.05%

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 13 254 9601 49.47 887 872 176.4
A 3 1 9242 47.44 887 872 176.4
A 0 226 7603 38.15 887 872 176.4
B 12 111 19083 109.83 889 870 165.8
B 11 111 16785 95.98 889 870 165.8
B 0 229 15624 88.97 889 870 165.8
C 3 247 248435 1243.47 871 879 199.1
C 14 238 137763 687.57 871 879 199.1
C 3 233 73480 364.67 871 879 199.1
D 1 52 43098 198.07 886 865 213.2
D 2 234 26477 120.12 886 865 213.2
D 14 226 8916 37.76 886 865 213.2

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