ASTROSAT CZTI

Data Quality Report

Orbit 20231016_A12_102T01_9000005876_level2

Creation date: 2023-10-25T11:52:09.169535
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/AS1A12_102T01_9000005876cztM0_level2.fits modeM0/AS1A12_102T01_9000005876cztM0_level2_quad_clean.evt
Size (bytes)372,994,560406,690,560
Size355.7 MB 387.9 MB
Events in quadrant A2,910,8923,760,058
Events in quadrant B2,734,4223,419,861
Events in quadrant C1,076,864699,661
Events in quadrant D72,660606

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013060
B013060
C013060
D013060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0790
B0790
C0790
D0790

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03394180
B03180080
C05292660
D04133830

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A644272170133.683083%
B644292106332.691800%
C644296002993.170777%
D6443064430100.000000%

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 72262 64322 0 0 0.00% 0.00%
B 72262 64003 0 0 0.00% 0.00%
C 72262 59988 0 0 0.00% 0.00%
D 72241 20932 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 7 110 2576 9.88 765 722 187.6
A 0 29 2384 8.86 765 722 187.6
A 0 30 2280 8.3 765 722 187.6
B 2 9 2403 12.12 728 696 140.9
B 5 232 1890 8.48 728 696 140.9
B 2 8 1864 8.29 728 696 140.9
C 1 81 913 8.74 288 271 73.5
C 1 80 876 8.23 288 271 73.5
C 3 203 872 8.18 288 271 73.5
D 14 238 65 5.82 21 19 7.9
D 7 3 62 5.44 21 19 7.9
D 3 159 61 5.31 21 19 7.9

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