ASTROSAT CZTI

Data Quality Report

Orbit 44121

Creation date: 2024-06-27T22:59:26.114598
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_012T02_9000005950_44121cztM0_level2.fits modeM0/AS1A13_012T02_9000005950_44121cztM0_level2_quad_clean.evt
Size (bytes)450,213,120101,773,440
Size429.4 MB 97.1 MB
Events in quadrant A5,481,442634,784
Events in quadrant B3,183,164709,060
Events in quadrant C3,354,218673,150
Events in quadrant D4,139,808609,993

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213721
B0138361
C0145732
D0167801

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A651666510.205648%
B65171221.872027%
C65161672.562922%
D65162583.959484%

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 7341 6517 402 402 5.48% 6.17%
B 7342 6518 12 12 0.16% 0.18%
C 7341 6517 65 65 0.89% 1.00%
D 7341 6517 126 126 1.72% 1.93%

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 15 223 1423382 9574.99 714 698 148.6
A 10 83 1180172 7938.13 714 698 148.6
A 7 3 42015 278.07 714 698 148.6
B 5 172 112087 765.44 734 711 145.5
B 5 235 67081 456.13 734 711 145.5
B 0 213 34896 234.94 734 711 145.5
C 14 254 266187 1555.39 723 728 170.7
C 1 241 131756 767.72 723 728 170.7
C 0 207 109129 635.15 723 728 170.7
D 5 235 327447 1797.84 721 697 181.7
D 1 52 245588 1347.44 721 697 181.7
D 2 249 233247 1279.53 721 697 181.7

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