ASTROSAT CZTI

Data Quality Report

Orbit 13942

Creation date: 2024-06-27T16:48:14.941413
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/AS1T02_041T01_9000002058_13942cztM0_level2.evt modeM0/AS1T02_041T01_9000002058_13942cztM0_level2_quad_clean.evt
Size (bytes)612,339,840125,530,560
Size584.0 MB 119.7 MB
Events in quadrant A3,526,690812,767
Events in quadrant B4,762,702809,443
Events in quadrant C3,939,989857,835
Events in quadrant D5,788,606781,210

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160143
B0193602
C0169852
D0226502

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7768490.630793%
B77683544.557158%
C7768620.798146%
D77687089.114315%

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 8998 7769 0 0 0.00% 0.00%
B 8998 7769 212 212 2.36% 2.73%
C 8999 7770 7 7 0.08% 0.09%
D 8999 7770 472 472 5.25% 6.07%

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 1 162 15513 79.6 906 885 183.8
A 15 223 8454 41.19 906 885 183.8
A 0 226 7857 37.94 906 885 183.8
B 3 64 522526 3028.31 903 878 172.3
B 10 245 384141 2224.95 903 878 172.3
B 0 230 78859 452.7 903 878 172.3
C 4 254 227468 1082.92 905 908 209.2
C 3 233 187451 891.64 905 908 209.2
C 13 61 6504 26.75 905 908 209.2
D 1 52 1425322 6957.96 858 838 204.7
D 13 122 690291 3367.66 858 838 204.7
D 10 157 128066 621.45 858 838 204.7

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