ASTROSAT CZTI

Data Quality Report

Orbit 08121

Creation date: 2024-06-27T15:28:16.877636
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/AS1G06_033T01_9000001116_08121cztM0_level2.evt modeM0/AS1G06_033T01_9000001116_08121cztM0_level2_quad_clean.evt
Size (bytes)463,098,24077,731,200
Size441.6 MB 74.1 MB
Events in quadrant A3,437,310476,371
Events in quadrant B3,344,273481,874
Events in quadrant C3,210,636486,214
Events in quadrant D3,597,248462,005

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143053
B0138572
C0135192
D0149672

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64111281.996568%
B64111151.793792%
C6411640.998284%
D64111292.012167%

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 7606 6412 0 0 0.00% 0.00%
B 7606 6412 2 2 0.03% 0.03%
C 7606 6411 0 0 0.00% 0.00%
D 7606 6412 45 45 0.59% 0.70%

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 15 79 216273 1269.29 832 815 169.7
A 8 15 8391 44.63 832 815 169.7
A 0 226 7795 41.12 832 815 169.7
B 0 219 32294 197.48 839 823 159.4
B 10 16 22019 133.0 839 823 159.4
B 5 255 19853 119.41 839 823 159.4
C 13 61 6286 28.88 821 829 189.0
C 1 16 6271 28.8 821 829 189.0
C 14 67 2258 7.56 821 829 189.0
D 2 152 190328 941.22 819 797 201.4
D 1 52 135108 666.99 819 797 201.4
D 12 233 78068 383.73 819 797 201.4

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