ASTROSAT CZTI

Data Quality Report

Orbit 24184

Creation date: 2024-06-27T19:03:11.139533
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/AS1A07_067T01_9000003578_24184cztM0_level2.evt modeM0/AS1A07_067T01_9000003578_24184cztM0_level2_quad_clean.evt
Size (bytes)1,334,505,600195,094,080
Size1.2 GB 186.1 MB
Events in quadrant A6,786,9601,270,479
Events in quadrant B6,934,8851,302,894
Events in quadrant C8,478,0001,221,886
Events in quadrant D17,239,5861,115,011

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02960
B02960
C02960
D02960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0296833
B0299124
C0344613
D0611363

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A144461270.879136%
B144461461.010660%
C144466784.693341%
D14446411928.513083%

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 38301 14449 0 0 0.00% 0.00%
B 38302 14449 0 0 0.00% 0.00%
C 38302 14448 402 402 1.05% 2.78%
D 38302 14449 3640 3640 9.50% 25.19%

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 13 254 22346 58.33 1760 1721 353.6
A 3 137 15506 38.98 1760 1721 353.6
A 0 226 15006 37.57 1760 1721 353.6
B 12 111 40973 118.33 1762 1723 331.7
B 11 111 36134 103.74 1762 1723 331.7
B 14 111 31414 89.51 1762 1723 331.7
C 0 239 1429060 3664.17 1681 1690 389.5
C 14 238 269263 686.88 1681 1690 389.5
C 2 16 114081 288.52 1681 1690 389.5
D 7 238 8492354 23727.59 1481 1439 357.8
D 12 218 2025530 5656.26 1481 1439 357.8
D 8 195 716206 1997.39 1481 1439 357.8

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