ASTROSAT CZTI

Data Quality Report

Orbit 21999

Creation date: 2024-06-27T18:35:06.924006
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_153T02_9000003250_21999cztM0_level2.evt modeM0/AS1A07_153T02_9000003250_21999cztM0_level2_quad_clean.evt
Size (bytes)526,259,52084,392,640
Size501.9 MB 80.5 MB
Events in quadrant A3,399,481542,144
Events in quadrant B3,612,375548,078
Events in quadrant C3,420,265518,017
Events in quadrant D5,070,117498,896

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142892
B0148262
C0143472
D0196302

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6427811.260308%
B64271161.804886%
C64271382.147192%
D64272223.454178%

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 7617 6427 3 3 0.04% 0.05%
B 7617 6427 17 17 0.22% 0.26%
C 7617 6427 1 1 0.01% 0.02%
D 7617 6427 144 144 1.89% 2.24%

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 15 236 36022 206.37 870 854 170.4
A 13 254 11015 59.62 870 854 170.4
A 3 1 9543 50.99 870 854 170.4
B 3 64 129130 809.47 858 839 158.5
B 0 230 61103 380.25 858 839 158.5
B 0 229 24359 148.4 858 839 158.5
C 14 238 131799 682.19 833 837 192.0
C 9 54 24460 123.05 833 837 192.0
C 0 10 19905 99.33 833 837 192.0
D 1 52 1687984 8383.29 844 823 201.3
D 7 238 126025 622.11 844 823 201.3
D 2 234 26178 125.99 844 823 201.3

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