ASTROSAT CZTI

Data Quality Report

Orbit 15141

Creation date: 2024-06-27T17:04:16.862871
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/AS1A04_218T03_9000002232_15141cztM0_level2.evt modeM0/AS1A04_218T03_9000002232_15141cztM0_level2_quad_clean.evt
Size (bytes)486,408,96099,432,000
Size463.9 MB 94.8 MB
Events in quadrant A3,445,755637,574
Events in quadrant B3,423,477654,387
Events in quadrant C3,841,522641,165
Events in quadrant D3,564,549610,244

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143143
B0143392
C0157202
D0149752

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6714510.759607%
B6714701.042598%
C6714510.759607%
D67141021.519214%

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 8020 6723 0 0 0.00% 0.00%
B 8020 6723 5 5 0.06% 0.07%
C 8020 6723 0 0 0.00% 0.00%
D 8020 6723 66 66 0.82% 0.98%

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 12 189 116321 673.84 855 838 171.4
A 1 162 25700 145.07 855 838 171.4
A 1 178 8446 44.39 855 838 171.4
B 3 64 38295 231.7 856 834 161.7
B 12 111 18795 111.09 856 834 161.7
B 11 111 16123 94.56 856 834 161.7
C 3 233 563944 2925.51 839 846 192.5
C 7 247 7640 35.3 839 846 192.5
C 13 61 5883 26.17 839 846 192.5
D 7 223 206921 1008.68 839 819 204.3
D 10 70 71430 345.57 839 819 204.3
D 13 122 33930 162.05 839 819 204.3

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