ASTROSAT CZTI

Data Quality Report

Orbit 31486

Creation date: 2024-06-27T20:29:08.132180
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/AS1T04_028T01_9000004584_31486cztM0_level2.evt modeM0/AS1T04_028T01_9000004584_31486cztM0_level2_quad_clean.evt
Size (bytes)738,959,04070,764,480
Size704.7 MB 67.5 MB
Events in quadrant A3,412,390434,122
Events in quadrant B10,649,516398,916
Events in quadrant C3,747,293421,481
Events in quadrant D4,106,077409,784

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142772
B0364973
C0151292
D0165682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6859821.195510%
B6858303144.196559%
C68582824.111986%
D68581061.545640%

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 7704 6859 2 2 0.03% 0.03%
B 7702 6857 2667 2667 34.63% 38.89%
C 7703 6858 83 83 1.08% 1.21%
D 7703 6858 23 23 0.30% 0.34%

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 0 13 48976 275.54 872 854 174.6
A 13 254 11476 60.82 872 854 174.6
A 3 137 8891 46.02 872 854 174.6
B 12 1 6442030 49017.56 674 656 131.4
B 6 159 1387529 10553.82 674 656 131.4
B 0 190 89756 678.03 674 656 131.4
C 0 10 333645 1685.14 832 839 197.5
C 14 238 134532 676.95 832 839 197.5
C 2 114 15841 75.96 832 839 197.5
D 8 195 728217 3649.01 844 824 199.3
D 12 218 52398 258.72 844 824 199.3
D 2 120 39708 195.06 844 824 199.3

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