ASTROSAT CZTI

Data Quality Report

Orbit 26758

Creation date: 2024-06-27T19:32:30.199390
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_223T01_9000003850_26758cztM0_level2.evt modeM0/AS1T03_223T01_9000003850_26758cztM0_level2_quad_clean.evt
Size (bytes)935,683,20089,000,640
Size892.3 MB 84.9 MB
Events in quadrant A5,421,799593,834
Events in quadrant B11,101,378489,670
Events in quadrant C3,271,889598,386
Events in quadrant D8,085,731539,664

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208220
B0376320
C0140010
D0287580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67802032.994100%
B6781331748.916089%
C6781911.341985%
D6781153022.563044%

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 7335 6781 114 114 1.55% 1.68%
B 7336 6781 2889 2889 39.38% 42.60%
C 7336 6782 6 6 0.08% 0.09%
D 7336 6782 1141 1141 15.55% 16.82%

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 13 2286510 14013.77 807 789 163.1
A 13 254 11980 68.61 807 789 163.1
A 13 34 10403 58.94 807 789 163.1
B 0 189 8831157 79809.74 573 558 110.6
B 10 246 22740 200.48 573 558 110.6
B 12 111 12989 112.35 573 558 110.6
C 14 238 125730 669.91 786 790 186.5
C 2 16 58483 309.34 786 790 186.5
C 3 233 17667 90.49 786 790 186.5
D 7 80 3579958 18545.08 713 698 193.0
D 1 52 1000510 5180.29 713 698 193.0
D 12 227 299527 1548.31 713 698 193.0

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