ASTROSAT CZTI

Data Quality Report

Orbit 01295

Creation date: 2024-06-27T14:10:33.367521
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/AS1G04_002T02_9000000230_01295cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01295cztM0_level2_quad_clean.evt
Size (bytes)1,415,128,32099,420,480
Size1.3 GB 94.8 MB
Events in quadrant A8,759,943660,661
Events in quadrant B9,427,508661,883
Events in quadrant C8,352,743640,661
Events in quadrant D15,866,684569,146

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0309092
B0328861
C0296831
D0521511

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68591261.837002%
B6859711.035136%
C6859300.437382%
D6859174125.382709%

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 7344 6860 436 436 5.94% 6.36%
B 7344 6860 610 610 8.31% 8.89%
C 7344 6859 196 196 2.67% 2.86%
D 7343 6858 4315 4315 58.76% 62.92%

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 32 719754 1422.38 2092 2107 504.5
A 11 79 8421 12.51 2092 2107 504.5
A 13 9 7609 10.91 2092 2107 504.5
B 8 4 747598 1461.24 2174 2185 510.1
B 6 53 264603 514.42 2174 2185 510.1
B 15 22 58263 109.93 2174 2185 510.1
C 15 241 340370 607.06 1999 2073 557.3
C 8 208 96997 170.34 1999 2073 557.3
C 3 79 39989 68.04 1999 2073 557.3
D 13 169 8172925 14265.61 1839 1908 572.8
D 10 84 579465 1008.34 1839 1908 572.8
D 12 22 93477 159.87 1839 1908 572.8

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