ASTROSAT CZTI

Data Quality Report

Orbit 24726

Creation date: 2024-06-27T19:09:12.708699
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/AS1T03_194T01_9000003620_24726cztM0_level2.evt modeM0/AS1T03_194T01_9000003620_24726cztM0_level2_quad_clean.evt
Size (bytes)481,216,32098,608,320
Size458.9 MB 94.0 MB
Events in quadrant A3,198,964652,253
Events in quadrant B3,417,319649,924
Events in quadrant C4,122,973613,099
Events in quadrant D3,391,276615,999

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135781
B0141251
C0171711
D0142911

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65251171.793103%
B65251682.574713%
C65252343.586207%
D6525991.517241%

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 7105 6525 0 0 0.00% 0.00%
B 7105 6525 11 11 0.15% 0.17%
C 7105 6525 5 5 0.07% 0.08%
D 7105 6525 10 10 0.14% 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 13 254 10490 57.56 827 807 168.2
A 3 137 7605 40.41 827 807 168.2
A 0 226 7085 37.32 827 807 168.2
B 0 230 105441 663.51 812 791 157.7
B 0 189 67355 422.03 812 791 157.7
B 5 172 31468 194.5 812 791 157.7
C 7 247 813394 4438.38 785 790 183.1
C 14 238 125192 679.47 785 790 183.1
C 10 91 92238 499.48 785 790 183.1
D 8 195 147378 743.58 808 785 197.1
D 12 233 91428 459.78 808 785 197.1
D 10 199 35242 174.78 808 785 197.1

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