ASTROSAT CZTI

Data Quality Report

Orbit 23504

Creation date: 2024-06-27T18:55:22.862298
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/AS1A07_112T01_9000003478_23504cztM0_level2.evt modeM0/AS1A07_112T01_9000003478_23504cztM0_level2_quad_clean.evt
Size (bytes)473,411,52092,833,920
Size451.5 MB 88.5 MB
Events in quadrant A3,059,103598,134
Events in quadrant B3,481,393614,216
Events in quadrant C3,155,817586,233
Events in quadrant D4,206,036565,972

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131742
B0144792
C0133652
D0168402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6398120.187559%
B6398250.390747%
C6398671.047202%
D63982263.532354%

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 7563 6399 0 0 0.00% 0.00%
B 7563 6399 5 5 0.07% 0.08%
C 7563 6398 0 0 0.00% 0.00%
D 7563 6399 198 198 2.62% 3.09%

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 13 254 10572 61.55 793 779 159.1
A 0 226 6880 38.35 793 779 159.1
A 3 137 6644 36.86 793 779 159.1
B 0 219 157615 1047.94 792 772 149.7
B 0 189 100943 669.29 792 772 149.7
B 12 17 54603 359.67 792 772 149.7
C 14 238 123081 694.79 759 764 176.0
C 7 247 62644 351.49 759 764 176.0
C 0 10 6547 32.85 759 764 176.0
D 1 52 886715 4841.03 756 736 183.0
D 9 35 362685 1977.71 756 736 183.0
D 9 85 63567 343.31 756 736 183.0

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