ASTROSAT CZTI

Data Quality Report

Orbit 15539

Creation date: 2024-06-27T17:10:01.759344
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/AS1G08_058T09_9000002300_15539cztM0_level2.evt modeM0/AS1G08_058T09_9000002300_15539cztM0_level2_quad_clean.evt
Size (bytes)1,253,931,840226,955,520
Size1.2 GB 216.4 MB
Events in quadrant A8,895,1901,419,960
Events in quadrant B9,180,6221,430,995
Events in quadrant C8,932,4461,380,946
Events in quadrant D9,706,7371,357,914

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0385506
B0396495
C0388455
D0416885

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186451420.761598%
B186452301.233575%
C186452801.501743%
D186452131.142397%

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 20781 18651 18 18 0.09% 0.10%
B 20781 18651 30 30 0.14% 0.16%
C 20781 18650 5 5 0.02% 0.03%
D 20781 18650 104 104 0.50% 0.56%

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 0 253 294401 649.68 2233 2184 449.8
A 0 226 19600 38.72 2233 2184 449.8
A 12 194 16825 32.55 2233 2184 449.8
B 15 222 124557 286.01 2231 2174 427.9
B 0 213 53041 118.88 2231 2174 427.9
B 12 111 51950 116.33 2231 2174 427.9
C 14 238 325748 645.81 2138 2150 501.1
C 3 233 116276 227.76 2138 2150 501.1
C 7 247 77394 150.17 2138 2150 501.1
D 5 222 1035888 1951.26 2173 2111 529.8
D 2 33 166675 310.62 2173 2111 529.8
D 1 52 153338 285.44 2173 2111 529.8

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