ASTROSAT CZTI

Data Quality Report

Orbit 10957

Creation date: 2024-06-27T16:06:14.201380
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/AS1T01_193T01_9000001590_10957cztM0_level2.evt modeM0/AS1T01_193T01_9000001590_10957cztM0_level2_quad_clean.evt
Size (bytes)547,623,36099,167,040
Size522.3 MB 94.6 MB
Events in quadrant A4,546,196640,082
Events in quadrant B4,266,216650,962
Events in quadrant C3,100,611653,379
Events in quadrant D4,232,000606,261

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175633
B0166572
C0133192
D0165472

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64853505.397070%
B64853715.720894%
C6485490.755590%
D64853415.258288%

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 7775 6486 203 203 2.61% 3.13%
B 7775 6486 204 204 2.62% 3.15%
C 7775 6486 0 0 0.00% 0.00%
D 7775 6486 255 255 3.28% 3.93%

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 1306434 7960.72 816 801 164.0
A 8 15 67768 408.31 816 801 164.0
A 4 2 12636 72.16 816 801 164.0
B 4 239 933733 6250.12 810 795 149.3
B 0 231 66247 438.49 810 795 149.3
B 0 214 39925 262.15 810 795 149.3
C 13 61 6013 28.85 793 797 180.8
C 5 207 3428 14.55 793 797 180.8
C 12 4 3162 13.08 793 797 180.8
D 10 253 741763 4044.34 780 762 183.2
D 5 97 94496 511.6 780 762 183.2
D 5 222 83812 453.28 780 762 183.2

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