ASTROSAT CZTI

Data Quality Report

Orbit 15810

Creation date: 2024-06-27T17:13:52.130803
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/AS1A04_026T01_9000002342_15810cztM0_level2.evt modeM0/AS1A04_026T01_9000002342_15810cztM0_level2_quad_clean.evt
Size (bytes)936,233,280175,273,920
Size892.9 MB 167.2 MB
Events in quadrant A8,750,7821,069,291
Events in quadrant B6,953,7161,125,230
Events in quadrant C6,040,2771,120,618
Events in quadrant D5,734,4071,099,952

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0348184
B0293723
C0267973
D0267463

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A129178506.580475%
B129173272.531548%
C129172401.858017%
D129171331.029651%

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 13623 12924 500 500 3.67% 3.87%
B 13623 12924 59 59 0.43% 0.46%
C 13623 12924 2 2 0.01% 0.02%
D 13623 12924 21 21 0.15% 0.16%

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 15 239 3000588 9974.0 1487 1453 300.7
A 9 143 19849 61.18 1487 1453 300.7
A 0 226 13210 39.1 1487 1453 300.7
B 10 245 433194 1491.78 1519 1479 289.4
B 4 173 220034 755.21 1519 1479 289.4
B 0 229 134559 459.85 1519 1479 289.4
C 14 238 223798 655.93 1461 1470 338.9
C 3 233 42646 121.48 1461 1470 338.9
C 0 207 35370 100.01 1461 1470 338.9
D 2 234 53624 142.36 1480 1436 366.6
D 10 70 45134 119.2 1480 1436 366.6
D 2 120 38631 101.46 1480 1436 366.6

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