ASTROSAT CZTI

Data Quality Report

Orbit 20230422_T05_101T01_9000005578_level2

Creation date: 2023-04-24T11:49:12.667448
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/AS1T05_101T01_9000005578cztM0_level2.fits modeM0/AS1T05_101T01_9000005578cztM0_level2_quad_clean.evt
Size (bytes)147,444,480219,499,200
Size140.6 MB 209.3 MB
Events in quadrant A872,0241,425,025
Events in quadrant B838,4421,441,957
Events in quadrant C855,4801,376,462
Events in quadrant D724,6081,229,801

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0510
B0510
C0510
D0510

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03460
B03460
C03460
D03460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0357400
B0359140
C0374640
D0444720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17039210.123247%
B17039720.422560%
C170392441.432009%
D170396904.049533%

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 22118 17039 0 0 0.00% 0.00%
B 22118 17039 0 0 0.00% 0.00%
C 22118 17039 0 0 0.00% 0.00%
D 22118 17034 0 0 0.00% 0.00%

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 9 19 759 9.3 227 214 58.6
A 0 29 747 9.09 227 214 58.6
A 0 30 692 8.16 227 214 58.6
B 2 9 749 11.81 222 212 45.5
B 3 17 611 8.77 222 212 45.5
B 3 80 602 8.57 222 212 45.5
C 1 80 717 8.5 226 212 59.4
C 1 81 698 8.18 226 212 59.4
C 3 203 695 8.13 226 212 59.4
D 7 3 588 6.95 207 188 57.5
D 10 189 560 6.46 207 188 57.5
D 4 160 548 6.26 207 188 57.5

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