ASTROSAT CZTI

Data Quality Report

Orbit 13084

Creation date: 2024-06-27T16:36:05.330499
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_067T01_9000001926_13084cztM0_level2.evt modeM0/AS1A04_067T01_9000001926_13084cztM0_level2_quad_clean.evt
Size (bytes)574,073,28096,917,760
Size547.5 MB 92.4 MB
Events in quadrant A3,194,215636,477
Events in quadrant B6,277,435614,251
Events in quadrant C3,988,625630,031
Events in quadrant D3,483,259598,945

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136583
B0230062
C0161862
D0148712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6527310.474950%
B6527120018.385169%
C65271572.405393%
D6527931.424851%

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 7854 6529 15 15 0.19% 0.23%
B 7854 6529 808 808 10.29% 12.38%
C 7854 6529 142 142 1.81% 2.17%
D 7854 6529 66 66 0.84% 1.01%

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 9 143 61944 388.01 793 778 157.6
A 12 189 59265 371.01 793 778 157.6
A 1 162 16749 101.31 793 778 157.6
B 0 85 2045662 14996.6 727 711 136.4
B 4 239 1076132 7886.58 727 711 136.4
B 3 64 146115 1066.32 727 711 136.4
C 15 208 1006467 5783.95 762 766 173.9
C 0 207 5854 29.26 762 766 173.9
C 13 61 5597 27.78 762 766 173.9
D 1 52 451130 2533.99 752 732 177.7
D 10 157 127088 710.89 752 732 177.7
D 2 234 23705 129.25 752 732 177.7

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