ASTROSAT CZTI

Data Quality Report

Orbit 38111

Creation date: 2024-06-27T21:48:30.971545
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/AS1A11_065T21_9000005364_38111cztM0_level2.fits modeM0/AS1A11_065T21_9000005364_38111cztM0_level2_quad_clean.evt
Size (bytes)493,796,16093,179,520
Size470.9 MB 88.9 MB
Events in quadrant A3,486,388642,037
Events in quadrant B2,876,928649,797
Events in quadrant C3,872,310613,997
Events in quadrant D7,624,721537,866

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138983
B0122022
C0149572
D0264362

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5401821.518237%
B5401811.499722%
C54012544.702833%
D540175814.034438%

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 7134 5402 59 59 0.83% 1.09%
B 7134 5402 46 46 0.64% 0.85%
C 7134 5402 255 255 3.57% 4.72%
D 7134 5402 770 770 10.79% 14.25%

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 12 16 428539 3393.39 626 613 126.1
A 10 83 373775 2959.12 626 613 126.1
A 12 189 102721 809.7 626 613 126.1
B 0 229 194279 1625.77 623 608 119.1
B 5 172 165917 1387.69 623 608 119.1
B 4 81 33289 274.34 623 608 119.1
C 1 23 1192398 8416.09 608 611 141.6
C 15 214 220571 1553.3 608 611 141.6
C 0 239 32756 227.0 608 611 141.6
D 12 235 3020483 18737.7 587 578 161.2
D 1 20 1822060 11301.81 587 578 161.2
D 12 233 183944 1137.74 587 578 161.2

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