ASTROSAT CZTI

Data Quality Report

Orbit 25382

Creation date: 2024-06-27T19:17:02.802255
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/AS1A09_057T04_9000003712_25382cztM0_level2.evt modeM0/AS1A09_057T04_9000003712_25382cztM0_level2_quad_clean.evt
Size (bytes)678,674,880109,834,560
Size647.2 MB 104.7 MB
Events in quadrant A4,429,082694,509
Events in quadrant B4,603,562698,807
Events in quadrant C4,286,155672,967
Events in quadrant D6,647,996657,987

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186130
B0191890
C0179320
D0255610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8668420.484541%
B8668891.026765%
C86681311.511306%
D86684805.537610%

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 9913 8669 0 0 0.00% 0.00%
B 9913 8670 7 7 0.07% 0.08%
C 9913 8669 6 6 0.06% 0.07%
D 9913 8668 330 330 3.33% 3.81%

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 6 16 238627 1098.48 1076 1052 216.3
A 15 173 38894 174.97 1076 1052 216.3
A 13 254 11808 49.73 1076 1052 216.3
B 3 112 255896 1248.05 1063 1034 204.2
B 4 80 69366 334.62 1063 1034 204.2
B 0 190 58041 279.16 1063 1034 204.2
C 14 238 163428 668.58 1032 1039 242.9
C 10 91 82762 336.46 1032 1039 242.9
C 3 233 16197 62.41 1032 1039 242.9
D 9 35 1577448 6268.02 1034 1004 251.5
D 7 238 513334 2037.05 1034 1004 251.5
D 1 52 388547 1540.89 1034 1004 251.5

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