ASTROSAT CZTI

Data Quality Report

Orbit 12172

Creation date: 2024-06-27T16:23:21.841078
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/AS1G08_065T01_9000001796_12172cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12172cztM0_level2_quad_clean.evt
Size (bytes)558,218,88073,408,320
Size532.4 MB 70.0 MB
Events in quadrant A3,787,837457,709
Events in quadrant B5,355,698429,370
Events in quadrant C3,484,344447,844
Events in quadrant D3,841,044437,989

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155663
B0203992
C0143372
D0156212

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64421432.219808%
B644268110.571251%
C6442851.319466%
D64421091.692021%

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 7783 6444 7 7 0.09% 0.11%
B 7783 6444 352 352 4.52% 5.46%
C 7783 6444 11 11 0.14% 0.17%
D 7783 6444 29 29 0.37% 0.45%

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 144395 827.12 870 854 173.5
A 1 178 71706 408.27 870 854 173.5
A 1 161 63634 361.75 870 854 173.5
B 4 239 1449944 9445.68 821 805 153.4
B 10 16 213882 1388.86 821 805 153.4
B 11 51 144236 934.9 821 805 153.4
C 15 208 214569 1134.56 833 839 188.4
C 3 233 6286 28.91 833 839 188.4
C 13 61 6182 28.36 833 839 188.4
D 1 52 252637 1272.41 840 819 197.9
D 13 104 100385 503.1 840 819 197.9
D 12 221 55600 276.8 840 819 197.9

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