ASTROSAT CZTI

Data Quality Report

Orbit 28809

Creation date: 2024-06-27T19:56:39.236614
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/AS1A10_121T01_9000004134_28809cztM0_level2.evt modeM0/AS1A10_121T01_9000004134_28809cztM0_level2_quad_clean.evt
Size (bytes)714,931,200110,802,240
Size681.8 MB 105.7 MB
Events in quadrant A3,851,707724,227
Events in quadrant B4,033,064743,728
Events in quadrant C4,090,031712,766
Events in quadrant D9,166,378649,117

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162381
B0166971
C0166721
D0326241

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75512983.946497%
B75513414.515958%
C75513514.648391%
D7550129217.112583%

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 7706 7551 34 34 0.44% 0.45%
B 7706 7551 41 41 0.53% 0.54%
C 7706 7551 1 1 0.01% 0.01%
D 7705 7550 1019 1019 13.23% 13.50%

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 14 235 234337 1250.6 928 906 186.7
A 13 254 14787 74.37 928 906 186.7
A 15 174 14209 71.27 928 906 186.7
B 5 172 167256 953.0 922 898 174.6
B 0 229 74095 419.32 922 898 174.6
B 0 244 60401 340.87 922 898 174.6
C 3 233 370546 1765.93 898 901 209.3
C 14 238 165760 787.59 898 901 209.3
C 14 254 34937 162.6 898 901 209.3
D 1 52 3486365 16845.52 864 838 206.9
D 8 195 1337840 6461.72 864 838 206.9
D 12 233 699142 3374.9 864 838 206.9

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