ASTROSAT CZTI

Data Quality Report

Orbit 13140

Creation date: 2024-06-27T16:36:50.851498
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_011T01_9000001940_13140cztM0_level2.evt modeM0/AS1T02_011T01_9000001940_13140cztM0_level2_quad_clean.evt
Size (bytes)511,128,00095,952,960
Size487.4 MB 91.5 MB
Events in quadrant A3,290,224634,794
Events in quadrant B4,926,421610,459
Events in quadrant C2,957,737631,674
Events in quadrant D3,880,659592,407

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138133
B0188792
C0128992
D0156662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6266661.053304%
B626675412.033195%
C6266340.542611%
D62661532.441749%

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 8562 6269 4 4 0.05% 0.06%
B 8562 6269 378 378 4.41% 6.03%
C 8562 6269 0 0 0.00% 0.00%
D 8562 6269 99 99 1.16% 1.58%

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 140133 888.89 777 762 156.8
A 0 23 73488 463.84 777 762 156.8
A 4 2 35326 220.44 777 762 156.8
B 4 239 1487411 10695.88 740 722 139.0
B 15 32 214719 1539.59 740 722 139.0
B 0 85 170999 1225.05 740 722 139.0
C 13 61 5466 26.85 757 762 175.2
C 0 207 4975 24.05 757 762 175.2
C 8 222 2103 7.66 757 762 175.2
D 1 52 914586 5121.52 744 724 178.4
D 5 222 76116 422.51 744 724 178.4
D 2 234 29378 160.58 744 724 178.4

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