ASTROSAT CZTI

Data Quality Report

Orbit 27819

Creation date: 2024-06-27T19:44:49.046013
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/AS1A10_048T08_9000004020_27819cztM0_level2.evt modeM0/AS1A10_048T08_9000004020_27819cztM0_level2_quad_clean.evt
Size (bytes)476,202,240105,739,200
Size454.1 MB 100.8 MB
Events in quadrant A3,299,386718,174
Events in quadrant B3,360,026724,307
Events in quadrant C3,479,972670,168
Events in quadrant D3,858,898654,215

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138000
B0139080
C0143440
D0156630

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6232971.556483%
B6233861.379753%
C62331272.037542%
D62331812.903899%

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 7457 6232 22 22 0.30% 0.35%
B 7458 6233 3 3 0.04% 0.05%
C 7458 6233 32 32 0.43% 0.51%
D 7458 6233 144 144 1.93% 2.31%

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 6 16 47035 275.21 838 824 167.9
A 2 79 12143 67.41 838 824 167.9
A 13 254 9703 52.88 838 824 167.9
B 10 245 45938 290.66 826 811 155.3
B 15 32 25668 160.1 826 811 155.3
B 0 190 20921 129.53 826 811 155.3
C 3 233 183411 1018.17 776 782 179.4
C 15 208 134631 746.22 776 782 179.4
C 14 238 129545 717.86 776 782 179.4
D 1 52 592508 3154.71 790 768 187.6
D 2 250 210907 1120.3 790 768 187.6
D 12 233 29109 151.09 790 768 187.6

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