ASTROSAT CZTI

Data Quality Report

Orbit 13754

Creation date: 2024-06-27T16:45:38.026693
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/AS1G08_062T01_9000002038_13754cztM0_level2.evt modeM0/AS1G08_062T01_9000002038_13754cztM0_level2_quad_clean.evt
Size (bytes)474,036,48091,906,560
Size452.1 MB 87.6 MB
Events in quadrant A3,156,299578,512
Events in quadrant B3,300,148575,606
Events in quadrant C3,169,916605,529
Events in quadrant D4,285,688567,515

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136323
B0138762
C0134902
D0170642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65331542.357263%
B65331552.372570%
C6533861.316394%
D65333565.449258%

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 6849 6536 5 5 0.07% 0.08%
B 6849 6536 11 11 0.16% 0.17%
C 6849 6536 0 0 0.00% 0.00%
D 6849 6536 192 192 2.80% 2.94%

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 69 57283 346.99 796 778 162.8
A 1 162 13569 78.55 796 778 162.8
A 0 23 11535 66.06 796 778 162.8
B 4 173 75055 490.51 787 767 151.5
B 0 219 60168 392.22 787 767 151.5
B 3 209 29347 188.71 787 767 151.5
C 3 233 119368 653.55 777 778 181.5
C 14 220 19364 102.42 777 778 181.5
C 13 61 5615 26.65 777 778 181.5
D 5 222 933278 4595.87 764 748 202.9
D 1 52 345087 1697.04 764 748 202.9
D 13 249 55164 268.18 764 748 202.9

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