ASTROSAT CZTI

Data Quality Report

Orbit 20240222_A13_041T08_9000006084_level2

Creation date: 2024-02-27T12:45:48.704011
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/AS1A13_041T08_9000006084cztM0_level2.fits modeM0/AS1A13_041T08_9000006084cztM0_level2_quad_clean.evt
Size (bytes)54,743,04053,363,520
Size52.2 MB 50.9 MB
Events in quadrant A320,756311,154
Events in quadrant B323,106323,394
Events in quadrant C326,410299,333
Events in quadrant D274,166267,987

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206560
B0126520
C0134820
D0158560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59103215.431472%
B5910781.319797%
C59101031.742809%
D59102003.384095%

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 7109 5909 0 0 0.00% 0.00%
B 7109 5909 0 0 0.00% 0.00%
C 7109 5909 0 0 0.00% 0.00%
D 7109 5908 0 0 0.00% 0.00%

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 15 236 268 8.2 83 79 23.1
A 0 29 258 7.76 83 79 23.1
A 0 30 238 6.9 83 79 23.1
B 2 9 301 11.29 86 82 19.4
B 5 128 238 8.04 86 82 19.4
B 3 17 220 7.11 86 82 19.4
C 1 81 254 7.18 86 81 24.1
C 3 202 251 7.05 86 81 24.1
C 1 80 242 6.68 86 81 24.1
D 3 31 222 6.39 78 70 23.8
D 6 83 203 5.59 78 70 23.8
D 6 79 203 5.59 78 70 23.8

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