ASTROSAT CZTI

Data Quality Report

Orbit 24764

Creation date: 2024-06-27T19:09:37.016646
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/AS1A07_147T01_9000003624_24764cztM0_level2.evt modeM0/AS1A07_147T01_9000003624_24764cztM0_level2_quad_clean.evt
Size (bytes)468,383,04079,050,240
Size446.7 MB 75.4 MB
Events in quadrant A3,314,161497,947
Events in quadrant B3,511,879508,506
Events in quadrant C3,584,611474,022
Events in quadrant D3,339,157466,145

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136262
B0142202
C0145093
D0139282

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6406530.827349%
B6406891.389323%
C64051231.920375%
D6405350.546448%

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 8671 6408 0 0 0.00% 0.00%
B 8671 6408 11 11 0.13% 0.17%
C 8670 6407 29 29 0.33% 0.45%
D 8670 6407 8 8 0.09% 0.12%

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 13 254 9119 48.43 859 843 170.9
A 3 137 7563 39.32 859 843 170.9
A 0 226 7247 37.47 859 843 170.9
B 3 64 112388 689.58 852 832 161.8
B 10 246 30212 181.61 852 832 161.8
B 12 111 19649 116.32 852 832 161.8
C 7 247 186155 979.97 808 816 189.1
C 14 238 131325 690.06 808 816 189.1
C 2 16 90732 475.43 808 816 189.1
D 8 195 181914 929.49 816 796 194.9
D 2 120 22504 111.4 816 796 194.9
D 2 234 22265 110.18 816 796 194.9

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