ASTROSAT CZTI

Data Quality Report

Orbit 43752

Creation date: 2024-06-27T22:55:21.581220
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/AS1A13_026T01_9000005904_43752cztM0_level2.fits modeM0/AS1A13_026T01_9000005904_43752cztM0_level2_quad_clean.evt
Size (bytes)634,181,760107,265,600
Size604.8 MB 102.3 MB
Events in quadrant A6,861,297712,582
Events in quadrant B3,986,808768,419
Events in quadrant C4,127,238740,123
Events in quadrant D7,977,303556,275

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252085
B0163491
C0168431
D0283211

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67495277.808564%
B67492002.963402%
C67502083.081481%
D6750141220.918519%

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 7419 6750 289 289 3.90% 4.28%
B 7419 6750 77 77 1.04% 1.14%
C 7420 6751 159 159 2.14% 2.36%
D 7420 6751 1134 1134 15.28% 16.80%

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 14 63 1683057 10567.5 762 747 159.2
A 10 83 955003 5994.2 762 747 159.2
A 15 223 608988 3820.69 762 747 159.2
B 0 200 323638 2121.98 779 758 152.2
B 0 199 174372 1141.0 779 758 152.2
B 15 36 83890 546.35 779 758 152.2
C 15 158 706412 3946.61 756 761 178.8
C 15 157 247466 1379.79 756 761 178.8
C 3 233 88597 491.26 756 761 178.8
D 1 52 1362086 7432.43 699 677 183.2
D 5 235 1267524 6916.18 699 677 183.2
D 15 0 729132 3976.9 699 677 183.2

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