ASTROSAT CZTI

Data Quality Report

Orbit 39708

Creation date: 2024-06-27T22:08:02.737508
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/AS1A12_022T01_9000005494_39708cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39708cztM0_level2_quad_clean.evt
Size (bytes)416,675,52093,556,800
Size397.4 MB 89.2 MB
Events in quadrant A4,722,851614,139
Events in quadrant B3,204,886657,794
Events in quadrant C4,005,079626,952
Events in quadrant D3,104,573584,963

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176402
B0127891
C0152651
D0125231

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49794709.439647%
B49792024.057040%
C49791332.671219%
D49791102.209279%

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 7131 4980 325 325 4.56% 6.53%
B 7131 4980 99 99 1.39% 1.99%
C 7131 4980 127 127 1.78% 2.55%
D 7131 4980 91 91 1.28% 1.83%

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 13 248 1087891 9294.26 578 569 117.0
A 15 222 865381 7392.28 578 569 117.0
A 10 83 430382 3673.98 578 569 117.0
B 5 172 763132 6866.4 591 576 111.1
B 0 190 106833 956.78 591 576 111.1
B 12 111 13135 113.08 591 576 111.1
C 15 208 884778 6593.55 586 592 134.1
C 9 187 510116 3799.62 586 592 134.1
C 15 214 203565 1513.61 586 592 134.1
D 12 233 411833 2882.07 588 573 142.7
D 13 171 140104 977.82 588 573 142.7
D 12 218 58055 402.83 588 573 142.7

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