ASTROSAT CZTI

Data Quality Report

Orbit 15250

Creation date: 2024-06-27T17:05:52.325034
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/AS1T02_073T01_9000002252_15250cztM0_level2.evt modeM0/AS1T02_073T01_9000002252_15250cztM0_level2_quad_clean.evt
Size (bytes)599,679,360111,000,960
Size571.9 MB 105.9 MB
Events in quadrant A4,282,478700,999
Events in quadrant B4,747,191700,999
Events in quadrant C4,491,000687,323
Events in quadrant D4,052,238670,139

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181273
B0194392
C0181772
D0180702

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A86721091.256919%
B86722342.698339%
C8672891.026292%
D86721011.164668%

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 10198 8673 0 0 0.00% 0.00%
B 10198 8673 89 89 0.87% 1.03%
C 10198 8673 2 2 0.02% 0.02%
D 10198 8674 13 13 0.13% 0.15%

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 12 189 214892 996.6 1056 1033 214.6
A 0 226 9326 38.65 1056 1033 214.6
A 12 194 7901 32.01 1056 1033 214.6
B 10 16 387624 1918.68 1051 1024 201.5
B 10 245 71253 348.54 1051 1024 201.5
B 3 64 52713 256.53 1051 1024 201.5
C 3 233 475827 1996.82 1021 1023 237.8
C 4 254 26327 106.42 1021 1023 237.8
C 10 22 10667 40.56 1021 1023 237.8
D 2 136 107185 426.15 1021 990 249.2
D 2 234 30264 117.47 1021 990 249.2
D 10 70 28740 111.36 1021 990 249.2

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