ASTROSAT CZTI

Data Quality Report

Orbit 24779

Creation date: 2024-06-27T19:09:47.857362
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_147T01_9000003624_24779cztM0_level2.evt modeM0/AS1A07_147T01_9000003624_24779cztM0_level2_quad_clean.evt
Size (bytes)487,088,64074,721,600
Size464.5 MB 71.3 MB
Events in quadrant A3,328,123467,836
Events in quadrant B4,211,042474,487
Events in quadrant C3,329,445445,815
Events in quadrant D3,453,178432,485

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135662
B0163492
C0135962
D0141872

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6334290.457847%
B63352674.214680%
C6335500.789266%
D6335470.741910%

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 7584 6335 0 0 0.00% 0.00%
B 7585 6336 171 171 2.25% 2.70%
C 7585 6336 0 0 0.00% 0.00%
D 7585 6336 27 27 0.36% 0.43%

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 13 254 8660 45.42 862 848 172.0
A 3 137 7481 38.57 862 848 172.0
A 0 226 7346 37.78 862 848 172.0
B 3 64 820655 5119.2 851 830 160.1
B 4 52 34316 209.1 851 830 160.1
B 12 111 19192 114.66 851 830 160.1
C 14 238 132936 696.3 815 824 189.7
C 10 218 11280 55.11 815 824 189.7
C 3 233 6622 30.56 815 824 189.7
D 1 52 202892 1013.07 820 795 199.5
D 8 195 133397 664.7 820 795 199.5
D 12 233 24870 120.68 820 795 199.5

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