ASTROSAT CZTI

Data Quality Report

Orbit 17887

Creation date: 2024-06-27T17:42:12.605152
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_17887cztM0_level2.evt modeM0/AS1T03_075T01_9000002660_17887cztM0_level2_quad_clean.evt
Size (bytes)485,438,40063,696,960
Size463.0 MB 60.7 MB
Events in quadrant A3,260,053374,384
Events in quadrant B3,411,108379,887
Events in quadrant C3,409,224367,133
Events in quadrant D4,172,335346,233

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139852
B0144412
C0144292
D0169512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6609500.756544%
B6609841.270994%
C6609871.316387%
D66093315.008322%

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 7714 6610 4 4 0.05% 0.06%
B 7714 6610 19 19 0.25% 0.29%
C 7714 6610 0 0 0.00% 0.00%
D 7714 6609 291 291 3.77% 4.40%

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 15631 87.04 842 823 170.1
A 15 191 8215 43.45 842 823 170.1
A 0 226 7122 37.03 842 823 170.1
B 7 220 72121 445.01 838 817 160.2
B 12 111 18330 109.3 838 817 160.2
B 11 111 16224 96.16 838 817 160.2
C 14 238 127226 665.74 814 821 189.9
C 3 233 105925 553.55 814 821 189.9
C 13 61 5684 25.61 814 821 189.9
D 7 238 760846 3872.24 800 777 196.3
D 7 38 281224 1428.76 800 777 196.3
D 13 168 45065 225.63 800 777 196.3

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