ASTROSAT CZTI

Data Quality Report

Orbit 46381

Creation date: 2024-06-27T23:22:27.598651
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_070T06_9000006202_46381cztM0_level2.fits modeM0/AS1A13_070T06_9000006202_46381cztM0_level2_quad_clean.evt
Size (bytes)975,640,320218,528,640
Size930.4 MB 208.4 MB
Events in quadrant A12,552,0361,376,603
Events in quadrant B8,434,5081,457,675
Events in quadrant C6,323,5141,486,397
Events in quadrant D7,732,8131,339,289

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0467992
B0347192
C0292165
D0331515

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02780
B02780
C02780
D02780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A138577585.470159%
B138576784.892834%
C13856580.418591%
D138562501.804273%

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 14877 13859 417 417 2.80% 3.01%
B 14877 13859 288 288 1.94% 2.08%
C 14878 13859 20 20 0.13% 0.14%
D 14878 13859 157 157 1.06% 1.13%

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 10 83 5772484 18348.1 1516 1482 314.5
A 0 247 842952 2675.34 1516 1482 314.5
A 0 226 62214 193.09 1516 1482 314.5
B 4 171 1628020 5431.59 1519 1470 299.5
B 5 32 469434 1562.69 1519 1470 299.5
B 5 255 150465 497.54 1519 1470 299.5
C 2 14 225237 622.55 1533 1541 359.3
C 14 254 66832 181.71 1533 1541 359.3
C 10 58 41379 110.87 1533 1541 359.3
D 1 52 962674 2510.48 1514 1467 382.9
D 13 249 723895 1886.84 1514 1467 382.9
D 2 234 66019 168.6 1514 1467 382.9

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