ASTROSAT CZTI

Data Quality Report

Orbit 33975

Creation date: 2024-06-27T20:54:56.954608
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_034T07_9000004860_33975cztM0_level2.evt modeM0/AS1A11_034T07_9000004860_33975cztM0_level2_quad_clean.evt
Size (bytes)687,591,36070,479,360
Size655.7 MB 67.2 MB
Events in quadrant A9,540,78877,734
Events in quadrant B3,073,029590,499
Events in quadrant C3,239,915578,873
Events in quadrant D4,635,538539,197

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0316583
B0120872
C0125982
D0171022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4925492399.959391%
B4925941.908629%
C49251172.375635%
D49253066.213198%

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 7046 4925 2720 2720 38.60% 55.23%
B 7047 4926 61 61 0.87% 1.24%
C 7047 4926 95 95 1.35% 1.93%
D 7047 4926 313 313 4.44% 6.35%

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 15 169 9079028 360458.47 117 115 25.2
A 13 6 3756 144.56 117 115 25.2
A 10 83 2757 104.89 117 115 25.2
B 5 172 355920 3009.13 622 609 118.1
B 0 190 90314 759.71 622 609 118.1
B 3 112 63515 532.75 622 609 118.1
C 4 254 333932 2427.9 602 608 137.3
C 0 10 241938 1757.82 602 608 137.3
C 15 214 219983 1597.9 602 608 137.3
D 8 195 740800 4996.54 600 584 148.1
D 7 223 427291 2880.32 600 584 148.1
D 7 238 360211 2427.52 600 584 148.1

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