ASTROSAT CZTI

Data Quality Report

Orbit 49864

Creation date: 2024-12-17T02:24:23.152921
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_037T01_9000006440_49864cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49864cztM0_level2_quad_clean.evt
Size (bytes)1,176,298,56039,983,040
Size1.1 GB 38.1 MB
Events in quadrant A14,136,81371,179
Events in quadrant B4,168,804652,709
Events in quadrant C12,562,50718,854
Events in quadrant D12,161,6876,884

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0465341
B0169671
C0418985
D0407001

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6607596190.222491%
B66081942.935835%
C6607645097.623732%
D6607654499.046466%

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 7461 6606 4393 4393 58.88% 66.50%
B 7463 6609 133 133 1.78% 2.01%
C 7461 6606 2971 2971 39.82% 44.97%
D 7461 6606 1735 1735 23.25% 26.26%

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 4 4 10914185 144123.39 271 261 75.7
A 0 98 823766 10874.76 271 261 75.7
A 6 35 376900 4973.69 271 261 75.7
B 4 206 683842 4595.87 693 669 148.6
B 0 229 329483 2212.01 693 669 148.6
B 4 216 114930 768.66 693 669 148.6
C 15 230 3089502 62199.61 149 146 49.7
C 15 197 1794438 36125.42 149 146 49.7
C 4 111 1162814 23408.6 149 146 49.7
D 7 61 7225741 185560.88 107 101 38.9
D 8 129 2173851 55823.84 107 101 38.9
D 15 185 608645 15627.95 107 101 38.9

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