ASTROSAT CZTI

Data Quality Report

Orbit 29675

Creation date: 2024-06-27T20:06:42.239648
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_097T02_9000004272_29675cztM0_level2.evt modeM0/AS1A10_097T02_9000004272_29675cztM0_level2_quad_clean.evt
Size (bytes)468,146,88092,266,560
Size446.5 MB 88.0 MB
Events in quadrant A3,153,852599,587
Events in quadrant B3,456,217618,751
Events in quadrant C3,583,066577,081
Events in quadrant D3,557,033559,210

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132933
B0141362
C0144792
D0144592

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6298651.032074%
B62981031.635440%
C62982724.318831%
D6298400.635122%

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 7493 6299 0 0 0.00% 0.00%
B 7493 6298 11 11 0.15% 0.17%
C 7493 6299 16 16 0.21% 0.25%
D 7493 6299 14 14 0.19% 0.22%

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 13 254 12001 67.83 816 801 165.1
A 3 137 8056 43.93 816 801 165.1
A 0 226 6895 36.9 816 801 165.1
B 0 229 192734 1233.69 817 795 155.6
B 0 190 33265 208.7 817 795 155.6
B 10 245 22000 136.3 817 795 155.6
C 3 233 174479 963.58 771 779 180.3
C 14 238 168922 932.76 771 779 180.3
C 10 22 155111 856.14 771 779 180.3
D 8 195 342285 1836.09 778 757 186.0
D 7 80 98885 527.54 778 757 186.0
D 2 250 50618 268.06 778 757 186.0

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