ASTROSAT CZTI

Data Quality Report

Orbit 46112

Creation date: 2024-06-27T23:19:22.835519
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/AS1C07_001T10_9000006170_46112cztM0_level2.fits modeM0/AS1C07_001T10_9000006170_46112cztM0_level2_quad_clean.evt
Size (bytes)728,066,88096,485,760
Size694.3 MB 92.0 MB
Events in quadrant A6,140,266726,958
Events in quadrant B3,186,229792,932
Events in quadrant C3,076,809777,651
Events in quadrant D14,055,982182,038

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224372
B0136712
C0134623
D0460752

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63353325.240726%
B63351021.610103%
C6334741.168298%
D6334479475.686770%

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 7560 6336 67 67 0.89% 1.06%
B 7560 6336 9 9 0.12% 0.14%
C 7559 6335 10 10 0.13% 0.16%
D 7559 6334 4364 4364 57.73% 68.90%

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 10 83 2986557 19934.17 726 709 149.8
A 9 191 284303 1893.33 726 709 149.8
A 14 235 49235 323.97 726 709 149.8
B 3 112 86097 597.55 746 723 142.9
B 0 190 45163 311.04 746 723 142.9
B 5 255 21613 146.21 746 723 142.9
C 14 254 130458 741.0 749 753 175.0
C 3 233 12623 67.81 749 753 175.0
C 1 90 6356 32.01 749 753 175.0
D 2 37 11982433 121237.49 388 375 98.8
D 1 52 241175 2436.48 388 375 98.8
D 13 171 132077 1332.59 388 375 98.8

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