ASTROSAT CZTI

Data Quality Report

Orbit 45993

Creation date: 2024-06-27T23:18:31.462067
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/AS1A13_017T01_9000006148_45993cztM0_level2.fits modeM0/AS1A13_017T01_9000006148_45993cztM0_level2_quad_clean.evt
Size (bytes)617,400,000103,299,840
Size588.8 MB 98.5 MB
Events in quadrant A7,763,789678,105
Events in quadrant B5,646,404701,171
Events in quadrant C3,761,919689,069
Events in quadrant D5,185,203610,738

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274722
B0212142
C0156282
D0198342

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64254797.455253%
B64263946.131341%
C64252363.673152%
D64254847.533074%

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 7530 6426 340 340 4.52% 5.29%
B 7530 6425 247 247 3.28% 3.84%
C 7530 6426 215 215 2.86% 3.35%
D 7530 6426 526 526 6.99% 8.19%

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 2795077 19239.39 702 687 145.2
A 15 223 2243234 15439.95 702 687 145.2
A 13 254 9611 61.44 702 687 145.2
B 3 112 2789961 20192.62 707 684 138.1
B 12 111 17720 123.33 707 684 138.1
B 11 111 16175 112.15 707 684 138.1
C 14 254 1010809 6168.1 701 707 163.8
C 3 233 12070 69.39 701 707 163.8
C 12 2 5707 30.53 701 707 163.8
D 12 2 1301555 7564.15 690 669 172.0
D 1 52 1023892 5949.65 690 669 172.0
D 2 249 67897 390.9 690 669 172.0

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