ASTROSAT CZTI

Data Quality Report

Orbit 42019

Creation date: 2024-06-27T22:35:48.340269
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_006T12_9000005734_42019cztM0_level2.fits modeM0/AS1A12_006T12_9000005734_42019cztM0_level2_quad_clean.evt
Size (bytes)551,108,160125,542,080
Size525.6 MB 119.7 MB
Events in quadrant A7,510,428742,040
Events in quadrant B3,769,904894,492
Events in quadrant C3,862,948840,520
Events in quadrant D4,632,083764,747

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274512
B0167452
C0166422
D0195413

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8043130716.250155%
B8043330.410295%
C804370.087032%
D80422192.723203%

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 10968 8045 1109 1109 10.11% 13.78%
B 10968 8045 13 13 0.12% 0.16%
C 10968 8045 0 0 0.00% 0.00%
D 10967 8044 217 217 1.98% 2.70%

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 15 223 3491386 20640.84 822 805 169.1
A 10 83 672479 3971.81 822 805 169.1
A 12 189 135481 796.38 822 805 169.1
B 5 255 111902 644.87 886 861 172.2
B 0 186 58359 333.92 886 861 172.2
B 0 190 54739 312.89 886 861 172.2
C 15 214 329446 1625.75 863 868 202.1
C 9 54 113627 557.91 863 868 202.1
C 15 111 20344 96.36 863 868 202.1
D 2 249 642211 3013.03 852 825 212.9
D 13 249 348667 1634.05 852 825 212.9
D 12 233 87041 405.02 852 825 212.9

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