ASTROSAT CZTI

Data Quality Report

Orbit 07008

Creation date: 2024-06-27T15:14:24.155263
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/AS1T01_151T01_9000000960_07008cztM0_level2.evt modeM0/AS1T01_151T01_9000000960_07008cztM0_level2_quad_clean.evt
Size (bytes)472,610,88093,545,280
Size450.7 MB 89.2 MB
Events in quadrant A3,067,917606,584
Events in quadrant B4,442,219592,879
Events in quadrant C2,981,138592,193
Events in quadrant D3,369,246576,790

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136952
B0174981
C0135871
D0144721

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6658921.381796%
B66583134.701111%
C6658370.555722%
D6658911.366777%

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 7413 6659 0 0 0.00% 0.00%
B 7413 6659 268 268 3.62% 4.02%
C 7413 6659 0 0 0.00% 0.00%
D 7413 6659 23 23 0.31% 0.35%

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 15 234 19599 117.19 787 767 160.7
A 13 248 11173 64.76 787 767 160.7
A 0 226 7709 43.2 787 767 160.7
B 4 239 1149922 7693.94 778 761 149.4
B 0 214 181217 1208.2 778 761 149.4
B 4 81 24782 160.83 778 761 149.4
C 1 16 13040 69.45 758 761 176.8
C 10 22 6178 30.64 758 761 176.8
C 13 61 6052 29.93 758 761 176.8
D 14 34 168804 881.53 769 744 190.6
D 8 195 133097 694.23 769 744 190.6
D 2 136 50911 263.14 769 744 190.6

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