ASTROSAT CZTI

Data Quality Report

Orbit 46897

Creation date: 2024-06-27T23:28:59.772606
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_068T05_9000006280_46897cztM0_level2.fits modeM0/AS1A13_068T05_9000006280_46897cztM0_level2_quad_clean.evt
Size (bytes)436,498,56059,676,480
Size416.3 MB 56.9 MB
Events in quadrant A4,119,662435,664
Events in quadrant B6,953,679241,210
Events in quadrant C1,897,922447,174
Events in quadrant D2,869,508396,116

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150631
B0234581
C086211
D0113861

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A40731774.345691%
B4073211451.902774%
C4073320.785662%
D40732115.180457%

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 5118 4074 34 34 0.66% 0.83%
B 5118 4073 1699 1699 33.20% 41.71%
C 5118 4074 18 18 0.35% 0.44%
D 5118 4074 167 167 3.26% 4.10%

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 2188100 22430.74 459 449 97.5
A 15 235 117853 1203.78 459 449 97.5
A 7 3 17282 172.59 459 449 97.5
B 3 112 5411212 75711.86 358 346 71.5
B 0 190 70263 978.32 358 346 71.5
B 4 171 20650 284.1 358 346 71.5
C 14 254 53295 485.23 458 461 108.9
C 12 2 38631 350.55 458 461 108.9
C 0 207 17231 154.01 458 461 108.9
D 1 52 950089 8343.23 446 431 113.8
D 2 249 132704 1162.09 446 431 113.8
D 13 249 43928 382.14 446 431 113.8

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