ASTROSAT CZTI

Data Quality Report

Orbit 08800

Creation date: 2024-06-27T15:37:24.674129
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/AS1A03_135T01_9000001226_08800cztM0_level2.evt modeM0/AS1A03_135T01_9000001226_08800cztM0_level2_quad_clean.evt
Size (bytes)586,540,800111,646,080
Size559.4 MB 106.5 MB
Events in quadrant A3,719,660761,133
Events in quadrant B3,473,468755,039
Events in quadrant C3,177,132734,173
Events in quadrant D6,956,345680,908

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153312
B0143691
C0135541
D0253191

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64521462.262864%
B64521742.696838%
C6452941.456913%
D645288113.654681%

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 7747 6452 11 11 0.14% 0.17%
B 7747 6452 41 41 0.53% 0.64%
C 7747 6452 0 0 0.00% 0.00%
D 7747 6452 672 672 8.67% 10.42%

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 8 5 397686 2306.28 855 842 172.1
A 13 251 10766 57.67 855 842 172.1
A 13 14 9830 52.23 855 842 172.1
B 5 255 99032 618.77 841 822 158.7
B 0 213 44903 277.73 841 822 158.7
B 4 80 26347 160.82 841 822 158.7
C 1 16 6943 32.74 812 816 187.1
C 13 61 6127 28.38 812 816 187.1
C 8 222 2583 9.44 812 816 187.1
D 2 16 3154916 16650.13 788 772 189.4
D 2 152 477118 2514.54 788 772 189.4
D 1 52 203387 1069.57 788 772 189.4

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