ASTROSAT CZTI

Data Quality Report

Orbit 47026

Creation date: 2024-06-27T23:30:53.660027
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/AS1C09_005T01_9000006296_47026cztM0_level2.fits modeM0/AS1C09_005T01_9000006296_47026cztM0_level2_quad_clean.evt
Size (bytes)579,358,080100,704,960
Size552.5 MB 96.0 MB
Events in quadrant A6,168,522706,676
Events in quadrant B8,119,748557,167
Events in quadrant C2,799,400709,857
Events in quadrant D3,871,126637,433

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227591
B0284031
C0129211
D0158701

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62832363.756167%
B6283185629.540029%
C6283390.620723%
D62842784.423934%

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 7413 6284 20 20 0.27% 0.32%
B 7413 6284 1401 1401 18.90% 22.29%
C 7413 6284 7 7 0.09% 0.11%
D 7414 6285 213 213 2.87% 3.39%

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 3278902 22426.35 712 697 146.2
A 9 191 94472 641.52 712 697 146.2
A 0 243 15791 103.26 712 697 146.2
B 3 112 5169505 41480.72 643 624 124.6
B 5 172 254346 2036.14 643 624 124.6
B 4 171 92303 735.73 643 624 124.6
C 14 254 52798 321.32 700 702 162.1
C 12 250 10203 58.6 700 702 162.1
C 9 54 7153 39.79 700 702 162.1
D 13 249 890709 5162.45 699 676 172.4
D 12 233 88140 507.32 699 676 172.4
D 2 249 73301 421.25 699 676 172.4

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