ASTROSAT CZTI

Data Quality Report

Orbit 07859

Creation date: 2024-06-27T15:24:53.722339
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/AS1G06_077T02_9000001076_07859cztM0_level2.evt modeM0/AS1G06_077T02_9000001076_07859cztM0_level2_quad_clean.evt
Size (bytes)475,525,440108,429,120
Size453.5 MB 103.4 MB
Events in quadrant A3,207,303699,117
Events in quadrant B3,671,083726,265
Events in quadrant C3,421,916718,387
Events in quadrant D3,646,718673,935

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138673
B0152202
C0144052
D0152392

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6687250.373860%
B66871532.288022%
C6687570.852400%
D6687580.867355%

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 9237 6689 0 0 0.00% 0.00%
B 9237 6689 73 73 0.79% 1.09%
C 9237 6689 14 14 0.15% 0.21%
D 9237 6689 34 34 0.37% 0.51%

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 3 1 20723 120.7 826 811 165.0
A 0 226 7795 42.34 826 811 165.0
A 12 194 6929 37.09 826 811 165.0
B 4 239 235408 1498.56 841 822 156.5
B 4 81 46422 291.3 841 822 156.5
B 4 173 44021 275.96 841 822 156.5
C 1 16 192651 1016.16 824 830 188.8
C 8 229 7416 34.89 824 830 188.8
C 13 61 6416 29.59 824 830 188.8
D 1 52 214238 1095.85 809 788 194.8
D 14 34 192629 984.91 809 788 194.8
D 13 104 47895 241.84 809 788 194.8

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