ASTROSAT CZTI

Data Quality Report

Orbit 12081

Creation date: 2024-06-27T16:22:10.452092
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/AS1A04_130T04_9000001794_12081cztM0_level2.evt modeM0/AS1A04_130T04_9000001794_12081cztM0_level2_quad_clean.evt
Size (bytes)524,917,44083,018,880
Size500.6 MB 79.2 MB
Events in quadrant A3,375,942522,226
Events in quadrant B5,189,005512,844
Events in quadrant C3,015,699522,630
Events in quadrant D3,872,965500,151

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140583
B0195722
C0132912
D0155762

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6533881.347008%
B653367210.286239%
C6533400.612276%
D65341021.561065%

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 7559 6534 4 4 0.05% 0.06%
B 7559 6534 432 432 5.72% 6.61%
C 7559 6534 0 0 0.00% 0.00%
D 7560 6535 28 28 0.37% 0.43%

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 1 162 113727 690.01 797 779 163.7
A 1 178 55753 335.84 797 779 163.7
A 1 161 49772 299.3 797 779 163.7
B 4 239 1988288 13612.19 764 745 146.0
B 15 204 115386 785.15 764 745 146.0
B 11 51 42389 285.21 764 745 146.0
C 8 208 12530 65.66 768 771 179.1
C 13 61 5579 26.85 768 771 179.1
C 14 234 5043 23.85 768 771 179.1
D 8 195 246061 1316.12 768 747 186.4
D 10 50 196478 1050.11 768 747 186.4
D 5 222 152856 816.07 768 747 186.4

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