ASTROSAT CZTI

Data Quality Report

Orbit 29939

Creation date: 2024-06-27T20:09:01.002310
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/AS1A10_058T01_9000004298_29939cztM0_level2.evt modeM0/AS1A10_058T01_9000004298_29939cztM0_level2_quad_clean.evt
Size (bytes)685,969,92095,232,960
Size654.2 MB 90.8 MB
Events in quadrant A3,846,537610,332
Events in quadrant B6,200,653599,051
Events in quadrant C4,442,919571,189
Events in quadrant D5,757,321561,427

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164752
B0240182
C0182123
D0222922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77901852.374840%
B77913424.389680%
C77905286.777920%
D77904776.123235%

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 8370 7793 1 1 0.01% 0.01%
B 8371 7794 1 1 0.01% 0.01%
C 8370 7793 3 3 0.04% 0.04%
D 8370 7793 309 309 3.69% 3.97%

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 8 192 25893 125.74 983 962 198.3
A 15 174 19671 94.36 983 962 198.3
A 13 254 16246 77.08 983 962 198.3
B 6 159 2327256 12591.05 962 939 184.8
B 0 190 64909 346.23 962 939 184.8
B 12 111 22600 117.24 962 939 184.8
C 3 233 400394 1871.92 915 917 213.4
C 14 238 254902 1190.16 915 917 213.4
C 14 254 147517 686.96 915 917 213.4
D 7 80 1366793 6164.41 931 904 221.6
D 8 195 549064 2473.91 931 904 221.6
D 2 250 43855 193.84 931 904 221.6

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