ASTROSAT CZTI

Data Quality Report

Orbit 15661

Creation date: 2024-06-27T17:11:46.722856
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/AS1T02_084T01_9000002318_15661cztM0_level2.evt modeM0/AS1T02_084T01_9000002318_15661cztM0_level2_quad_clean.evt
Size (bytes)456,871,68068,031,360
Size435.7 MB 64.9 MB
Events in quadrant A3,318,336405,479
Events in quadrant B3,303,040414,603
Events in quadrant C3,350,210407,963
Events in quadrant D3,441,791396,922

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134423
B0134162
C0136222
D0139192

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6223661.060582%
B6223560.899888%
C6223981.574803%
D6223871.398040%

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 7603 6224 14 14 0.18% 0.22%
B 7603 6224 1 1 0.01% 0.02%
C 7603 6224 0 0 0.00% 0.00%
D 7603 6224 39 39 0.51% 0.63%

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 4 2 82190 499.3 831 817 163.0
A 13 248 21604 127.55 831 817 163.0
A 0 226 7602 41.63 831 817 163.0
B 0 189 20291 127.78 833 815 152.4
B 12 111 17281 108.03 833 815 152.4
B 11 111 14936 92.65 833 815 152.4
C 14 238 130011 696.78 814 821 185.4
C 3 233 40038 211.51 814 821 185.4
C 13 61 5950 27.66 814 821 185.4
D 1 52 196563 1000.5 817 795 195.7
D 13 104 52591 264.71 817 795 195.7
D 2 120 41118 206.08 817 795 195.7

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