ASTROSAT CZTI

Data Quality Report

Orbit 12045

Creation date: 2024-06-27T16:21:40.726552
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_085T02_9000001784_12045cztM0_level2.evt modeM0/AS1A03_085T02_9000001784_12045cztM0_level2_quad_clean.evt
Size (bytes)555,226,56097,073,280
Size529.5 MB 92.6 MB
Events in quadrant A3,668,669624,118
Events in quadrant B5,460,637605,294
Events in quadrant C3,281,789614,127
Events in quadrant D3,917,622596,661

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156734
B0211123
C0148073
D0162053

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71641061.479620%
B71645327.426019%
C7164390.544389%
D7164861.200447%

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 9010 7167 17 17 0.19% 0.24%
B 9010 7166 283 283 3.14% 3.95%
C 9010 7168 3 3 0.03% 0.04%
D 9010 7168 38 38 0.42% 0.53%

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 1 162 111117 626.2 862 842 176.1
A 5 16 73000 409.75 862 842 176.1
A 1 178 51922 290.06 862 842 176.1
B 4 239 1449347 8787.97 848 830 164.8
B 4 206 236120 1427.47 848 830 164.8
B 0 231 226780 1370.81 848 830 164.8
C 14 234 29181 144.71 834 838 195.9
C 13 61 6082 26.77 834 838 195.9
C 3 202 2027 6.07 834 838 195.9
D 8 195 365165 1815.28 827 804 200.7
D 1 52 268183 1332.11 827 804 200.7
D 13 104 71767 353.54 827 804 200.7

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