ASTROSAT CZTI

Data Quality Report

Orbit 17374

Creation date: 2024-06-27T17:35:43.353071
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/AS1T03_033T01_9000002568_17374cztM0_level2.evt modeM0/AS1T03_033T01_9000002568_17374cztM0_level2_quad_clean.evt
Size (bytes)696,784,32096,356,160
Size664.5 MB 91.9 MB
Events in quadrant A3,811,357614,749
Events in quadrant B3,812,943626,538
Events in quadrant C3,766,094601,926
Events in quadrant D9,190,773538,851

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165412
B0164482
C0162142
D0326912

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7699851.104039%
B76991772.299000%
C76991852.402909%
D7699149919.470061%

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 8214 7702 0 0 0.00% 0.00%
B 8214 7702 3 3 0.04% 0.04%
C 8214 7702 0 0 0.00% 0.00%
D 8214 7702 1276 1276 15.53% 16.57%

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 23 150041 767.86 950 929 194.2
A 0 226 16904 82.26 950 929 194.2
A 3 137 7137 31.97 950 929 194.2
B 4 216 49221 263.17 951 927 183.5
B 12 111 22047 115.09 951 927 183.5
B 11 111 19120 99.14 951 927 183.5
C 14 238 140558 645.72 912 920 216.3
C 3 233 63771 290.64 912 920 216.3
C 13 61 6552 26.04 912 920 216.3
D 11 176 4056546 19338.0 856 831 209.7
D 1 20 733784 3494.78 856 831 209.7
D 13 232 572891 2727.63 856 831 209.7

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