ASTROSAT CZTI

Data Quality Report

Orbit 11689

Creation date: 2024-06-27T16:16:56.903508
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/AS1A04_227T01_9000001724_11689cztM0_level2.evt modeM0/AS1A04_227T01_9000001724_11689cztM0_level2_quad_clean.evt
Size (bytes)1,694,145,600225,558,720
Size1.6 GB 215.1 MB
Events in quadrant A12,983,3061,393,766
Events in quadrant B11,990,4851,386,069
Events in quadrant C8,337,2841,456,175
Events in quadrant D16,762,5521,331,757

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0512465
B0474664
C0374924
D0624444

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183217424.049997%
B183219955.430926%
C18321780.425741%
D18322213111.630826%

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 20347 18325 296 296 1.45% 1.62%
B 20347 18325 496 496 2.44% 2.71%
C 20347 18325 1 1 0.00% 0.01%
D 20348 18326 1784 1784 8.77% 9.73%

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 2884916 6577.9 2147 2100 438.3
A 1 162 649805 1477.91 2147 2100 438.3
A 1 178 370182 839.88 2147 2100 438.3
B 4 239 2105058 5143.38 2142 2087 408.9
B 3 64 651316 1587.86 2142 2087 408.9
B 15 204 346571 842.53 2142 2087 408.9
C 14 234 19109 34.29 2132 2146 494.7
C 13 61 15365 26.72 2132 2146 494.7
C 12 4 11192 18.29 2132 2146 494.7
D 13 152 5091626 10331.64 2042 1988 492.6
D 1 52 1064952 2157.75 2042 1988 492.6
D 1 239 925833 1875.35 2042 1988 492.6

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