ASTROSAT CZTI

Data Quality Report

Orbit 30749

Creation date: 2024-06-27T20:19:09.885895
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_053T35_9000004438_30749cztM0_level2.evt modeM0/AS1A10_053T35_9000004438_30749cztM0_level2_quad_clean.evt
Size (bytes)574,395,84086,716,800
Size547.8 MB 82.7 MB
Events in quadrant A3,511,912543,931
Events in quadrant B5,451,290542,665
Events in quadrant C3,627,047529,918
Events in quadrant D4,328,830519,363

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148022
B0216082
C0150182
D0173852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70261872.661543%
B70262964.212923%
C70261962.789638%
D70273414.852711%

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 7301 7026 10 10 0.14% 0.14%
B 7301 7026 25 25 0.34% 0.36%
C 7301 7026 1 1 0.01% 0.01%
D 7302 7027 172 172 2.36% 2.45%

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 0 13 75885 421.13 880 860 178.2
A 15 192 40863 224.54 880 860 178.2
A 13 254 13289 69.77 880 860 178.2
B 6 159 1912384 11359.75 859 836 168.3
B 5 255 109742 647.2 859 836 168.3
B 12 111 21341 121.85 859 836 168.3
C 14 238 135340 679.74 838 844 197.9
C 0 10 115936 581.67 838 844 197.9
C 3 233 46608 231.29 838 844 197.9
D 13 168 808279 3943.69 851 828 204.7
D 8 195 102819 498.14 851 828 204.7
D 2 250 67274 324.53 851 828 204.7

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