ASTROSAT CZTI

Data Quality Report

Orbit 32095

Creation date: 2024-06-27T20:36:25.463456
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/AS1T04_051T01_9000004686_32095cztM0_level2.evt modeM0/AS1T04_051T01_9000004686_32095cztM0_level2_quad_clean.evt
Size (bytes)758,528,640108,432,000
Size723.4 MB 103.4 MB
Events in quadrant A3,480,238722,977
Events in quadrant B9,159,613682,786
Events in quadrant C3,675,887707,169
Events in quadrant D6,175,207673,885

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147471
B0322001
C0152841
D0235411

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71291452.033946%
B7129128317.996914%
C71292072.903633%
D71283514.924242%

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 7384 7129 0 0 0.00% 0.00%
B 7384 7129 507 507 6.87% 7.11%
C 7384 7129 14 14 0.19% 0.20%
D 7383 7129 210 210 2.84% 2.95%

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 13904 72.68 896 876 179.3
A 15 174 10289 52.51 896 876 179.3
A 13 6 9198 46.43 896 876 179.3
B 10 245 3288613 20291.4 842 821 162.0
B 6 159 1897068 11703.14 842 821 162.0
B 12 18 380810 2345.19 842 821 162.0
C 0 10 159363 795.82 852 858 199.2
C 14 238 147413 735.82 852 858 199.2
C 2 114 16217 77.11 852 858 199.2
D 8 195 1544809 7554.19 859 834 204.4
D 12 79 363611 1774.96 859 834 204.4
D 12 218 363181 1772.85 859 834 204.4

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