ASTROSAT CZTI

Data Quality Report

Orbit 37954

Creation date: 2024-06-27T21:46:35.666267
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/AS1A11_082T01_9000005356_37954cztM0_level2.evt modeM0/AS1A11_082T01_9000005356_37954cztM0_level2_quad_clean.evt
Size (bytes)450,561,60067,610,880
Size429.7 MB 64.5 MB
Events in quadrant A3,282,782416,660
Events in quadrant B2,796,291430,307
Events in quadrant C3,082,485438,605
Events in quadrant D4,138,749405,145

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131313
B0113102
C0120862
D0157332

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5084170.334382%
B5084511.003147%
C50841362.675059%
D50841743.422502%

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 7088 5085 7 7 0.10% 0.14%
B 7088 5085 18 18 0.25% 0.35%
C 7088 5085 92 92 1.30% 1.81%
D 7088 5085 150 150 2.12% 2.95%

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 15 222 478409 3812.02 631 621 125.3
A 10 83 350162 2788.81 631 621 125.3
A 13 6 9281 69.09 631 621 125.3
B 5 172 240300 2018.07 629 613 118.8
B 5 184 70528 588.66 629 613 118.8
B 12 111 13912 111.97 629 613 118.8
C 15 159 308052 2188.15 616 621 140.5
C 15 214 232597 1651.1 616 621 140.5
C 0 10 109670 776.16 616 621 140.5
D 1 52 1010525 6894.2 613 598 146.5
D 12 227 308437 2101.44 613 598 146.5
D 7 223 161411 1097.78 613 598 146.5

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