ASTROSAT CZTI

Data Quality Report

Orbit 24692

Creation date: 2024-06-27T19:08:49.364899
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/AS1T03_191T01_9000003618_24692cztM0_level2.evt modeM0/AS1T03_191T01_9000003618_24692cztM0_level2_quad_clean.evt
Size (bytes)557,830,080140,892,480
Size532.0 MB 134.4 MB
Events in quadrant A3,309,775984,811
Events in quadrant B3,358,382995,500
Events in quadrant C4,392,612936,089
Events in quadrant D5,405,555910,286

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139461
B0140801
C0174001
D0204161

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6316520.823306%
B6316671.060798%
C63162103.324889%
D63163856.095630%

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 7541 6316 5 5 0.07% 0.08%
B 7541 6316 8 8 0.11% 0.13%
C 7541 6316 34 34 0.45% 0.54%
D 7541 6316 297 297 3.94% 4.70%

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 13 254 10338 56.04 857 843 169.4
A 0 226 7698 40.46 857 843 169.4
A 3 137 7003 36.35 857 843 169.4
B 4 80 42203 266.54 843 824 155.2
B 0 190 19351 119.34 843 824 155.2
B 12 111 18340 112.83 843 824 155.2
C 7 247 944079 5049.26 818 824 186.8
C 14 238 134275 714.37 818 824 186.8
C 10 91 79385 420.54 818 824 186.8
D 1 52 2037910 10271.17 828 804 198.3
D 8 195 167188 838.91 828 804 198.3
D 10 199 31815 156.36 828 804 198.3

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