ASTROSAT CZTI

Data Quality Report

Orbit 17884

Creation date: 2024-06-27T17:42:10.978382
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_075T01_9000002660_17884cztM0_level2.evt modeM0/AS1T03_075T01_9000002660_17884cztM0_level2_quad_clean.evt
Size (bytes)869,544,000149,857,920
Size829.3 MB 142.9 MB
Events in quadrant A5,494,247933,016
Events in quadrant B5,655,094955,727
Events in quadrant C5,610,471916,810
Events in quadrant D8,756,932898,162

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02440
B02440
C02440
D02440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0245412
B0247072
C0245672
D0345162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A120731811.499213%
B120741831.515653%
C120742131.764121%
D12074128010.601292%

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 12988 12074 0 0 0.00% 0.00%
B 12989 12076 3 3 0.02% 0.02%
C 12989 12076 2 2 0.02% 0.02%
D 12989 12074 965 965 7.43% 7.99%

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 15 174 18090 57.37 1424 1388 291.1
A 0 226 12191 37.11 1424 1388 291.1
A 3 137 11190 33.67 1424 1388 291.1
B 12 111 33929 119.12 1422 1386 273.2
B 11 111 29715 103.7 1422 1386 273.2
B 14 111 24731 85.45 1422 1386 273.2
C 14 238 208952 644.82 1366 1373 321.9
C 3 233 46113 138.98 1366 1373 321.9
C 9 54 17635 50.52 1366 1373 321.9
D 7 238 3530859 10892.31 1320 1275 324.0
D 10 70 56302 169.81 1320 1275 324.0
D 7 38 48977 147.21 1320 1275 324.0

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