ASTROSAT CZTI

Data Quality Report

Orbit 20390

Creation date: 2024-06-27T18:14:48.216875
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/AS1A05_198T01_9000003014_20390cztM0_level2.evt modeM0/AS1A05_198T01_9000003014_20390cztM0_level2_quad_clean.evt
Size (bytes)536,065,92088,398,720
Size511.2 MB 84.3 MB
Events in quadrant A3,376,985565,194
Events in quadrant B3,655,079567,137
Events in quadrant C3,452,500543,155
Events in quadrant D5,290,135528,636

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144023
B0152972
C0145192
D0201042

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6782891.312297%
B67821482.182247%
C67821041.533471%
D67834126.074009%

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 8837 6784 3 3 0.03% 0.04%
B 8837 6783 29 29 0.33% 0.43%
C 8837 6784 0 0 0.00% 0.00%
D 8838 6783 264 264 2.99% 3.89%

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 12 96 13130 69.36 873 856 177.0
A 0 226 7505 37.57 873 856 177.0
A 3 137 7272 36.25 873 856 177.0
B 7 220 171425 1026.14 867 845 166.2
B 4 216 23757 137.83 867 845 166.2
B 12 111 19955 114.96 867 845 166.2
C 14 238 132020 665.16 841 845 197.2
C 9 221 29339 144.49 841 845 197.2
C 13 61 5880 25.53 841 845 197.2
D 1 52 1430135 7009.26 839 815 203.9
D 13 153 283327 1385.41 839 815 203.9
D 2 184 192791 941.43 839 815 203.9

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