ASTROSAT CZTI

Data Quality Report

Orbit 39752

Creation date: 2024-06-27T22:08:34.913818
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/AS1A12_022T01_9000005494_39752cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39752cztM0_level2_quad_clean.evt
Size (bytes)592,804,800156,790,080
Size565.3 MB 149.5 MB
Events in quadrant A5,661,6151,073,678
Events in quadrant B4,556,6001,108,012
Events in quadrant C4,616,0421,048,478
Events in quadrant D6,442,949921,761

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221383
B0189292
C0186862
D0249092

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85912953.433826%
B85911051.222209%
C8591340.395763%
D85916397.438017%

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 12836 8593 233 233 1.82% 2.71%
B 12836 8593 75 75 0.58% 0.87%
C 12836 8593 25 25 0.19% 0.29%
D 12836 8593 521 521 4.06% 6.06%

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 15 174 708659 3533.82 997 980 200.3
A 10 83 660773 3294.7 997 980 200.3
A 13 248 359005 1787.81 997 980 200.3
B 5 172 208785 1111.95 998 974 186.9
B 4 170 149341 793.88 998 974 186.9
B 5 255 113178 600.38 998 974 186.9
C 15 214 348370 1523.18 986 995 228.1
C 15 208 279165 1219.72 986 995 228.1
C 9 187 93786 406.87 986 995 228.1
D 12 227 2185816 9309.83 964 935 234.7
D 2 250 123757 523.35 964 935 234.7
D 13 249 120393 509.01 964 935 234.7

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