ASTROSAT CZTI

Data Quality Report

Orbit 31786

Creation date: 2024-06-27T20:32:43.269690
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/AS1T04_036T01_9000004640_31786cztM0_level2.evt modeM0/AS1T04_036T01_9000004640_31786cztM0_level2_quad_clean.evt
Size (bytes)367,620,48070,920,000
Size350.6 MB 67.6 MB
Events in quadrant A2,813,377469,138
Events in quadrant B3,226,555484,948
Events in quadrant C2,363,011459,703
Events in quadrant D2,467,934461,055

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108101
B0120851
C095831
D099721

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A38673228.326868%
B38661313.388515%
C38661744.500776%
D3866701.810657%

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 5152 3868 119 119 2.31% 3.08%
B 5151 3867 2 2 0.04% 0.05%
C 5151 3867 25 25 0.49% 0.65%
D 5151 3867 8 8 0.16% 0.21%

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 0 13 711189 6572.28 543 534 108.1
A 13 254 7811 67.3 543 534 108.1
A 3 137 4996 41.27 543 534 108.1
B 6 159 1022529 9927.65 543 531 102.9
B 0 190 15211 142.6 543 531 102.9
B 0 229 13941 130.26 543 531 102.9
C 0 10 155439 1268.38 523 527 122.1
C 14 238 88874 723.36 523 527 122.1
C 10 22 35164 283.6 523 527 122.1
D 8 195 299362 2325.29 540 527 128.5
D 2 250 62831 484.8 540 527 128.5
D 7 223 33845 259.25 540 527 128.5

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