ASTROSAT CZTI

Data Quality Report

Orbit 14531

Creation date: 2024-06-27T16:56:29.991795
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/AS1T02_049T01_9000002142_14531cztM0_level2.evt modeM0/AS1T02_049T01_9000002142_14531cztM0_level2_quad_clean.evt
Size (bytes)498,686,400117,927,360
Size475.6 MB 112.5 MB
Events in quadrant A4,774,600751,266
Events in quadrant B3,354,682808,743
Events in quadrant C3,312,724812,976
Events in quadrant D3,241,828767,529

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183193
B0141252
C0140362
D0139162

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61735358.666775%
B6173560.907176%
C6173340.550786%
D6173791.279767%

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 7469 6175 364 364 4.87% 5.89%
B 7469 6175 14 14 0.19% 0.23%
C 7469 6175 1 1 0.01% 0.02%
D 7469 6175 55 55 0.74% 0.89%

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 8 15 1918146 12845.48 735 717 149.3
A 12 189 16210 103.79 735 717 149.3
A 0 23 8570 52.61 735 717 149.3
B 0 85 69099 482.9 773 756 141.5
B 0 189 60878 424.81 773 756 141.5
B 3 209 39447 273.38 773 756 141.5
C 3 233 311719 1798.09 763 769 172.9
C 0 207 23571 131.85 763 769 172.9
C 13 61 5625 28.08 763 769 172.9
D 10 199 199300 1095.02 750 728 181.3
D 2 120 112194 614.67 750 728 181.3
D 15 0 43363 235.11 750 728 181.3

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