ASTROSAT CZTI

Data Quality Report

Orbit 01090

Creation date: 2024-06-27T14:07:20.129503
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/AS1P01_997T02_9000000212_01090cztM0_level2.evt modeM0/AS1P01_997T02_9000000212_01090cztM0_level2_quad_clean.evt
Size (bytes)1,229,313,600112,029,120
Size1.1 GB 106.8 MB
Events in quadrant A9,900,151720,713
Events in quadrant B9,499,175731,415
Events in quadrant C9,165,803710,885
Events in quadrant D8,166,752706,490

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0348383
B0335492
C0326022
D0296262

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75153194.244844%
B7515210.279441%
C751580.106454%
D751590.119760%

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 7685 7517 703 703 9.15% 9.35%
B 7685 7517 372 372 4.84% 4.95%
C 7685 7517 263 263 3.42% 3.50%
D 7685 7517 170 170 2.21% 2.26%

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 32 1156385 2123.57 2274 2286 543.5
A 15 233 12583 18.95 2274 2286 543.5
A 11 79 11079 16.18 2274 2286 543.5
B 14 53 98499 169.19 2409 2417 567.9
B 15 22 63255 107.13 2409 2417 567.9
B 4 187 47304 79.04 2409 2417 567.9
C 15 241 361642 579.32 2224 2308 620.3
C 3 79 55677 86.04 2224 2308 620.3
C 3 111 43824 66.93 2224 2308 620.3
D 10 102 45843 65.87 2155 2236 662.0
D 10 125 28941 40.34 2155 2236 662.0
D 2 107 24126 33.07 2155 2236 662.0

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