ASTROSAT CZTI

Data Quality Report

Orbit 15959

Creation date: 2024-06-27T17:15:43.034005
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/AS1T02_087T01_9000002352_15959cztM0_level2.evt modeM0/AS1T02_087T01_9000002352_15959cztM0_level2_quad_clean.evt
Size (bytes)1,258,032,960232,073,280
Size1.2 GB 221.3 MB
Events in quadrant A8,955,9721,459,644
Events in quadrant B9,720,7501,473,998
Events in quadrant C9,563,1601,413,087
Events in quadrant D8,589,4121,388,277

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0388945
B0403824
C0401854
D0386694

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03840
B03840
C03840
D03840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A187753461.842876%
B187754132.199734%
C187754942.631158%
D187752771.475366%

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 20861 18777 10 10 0.05% 0.05%
B 20861 18777 21 21 0.10% 0.11%
C 20861 18777 26 26 0.12% 0.14%
D 20861 18778 10 10 0.05% 0.05%

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 15 157 54087 111.15 2292 2240 466.5
A 15 239 33922 67.92 2292 2240 466.5
A 7 32 31922 63.63 2292 2240 466.5
B 4 173 128416 285.76 2290 2231 441.6
B 5 175 120989 268.94 2290 2231 441.6
B 4 216 115170 255.76 2290 2231 441.6
C 9 236 519336 1010.32 2184 2197 511.9
C 14 238 329850 640.12 2184 2197 511.9
C 3 233 133941 257.38 2184 2197 511.9
D 2 152 91837 165.32 2225 2162 542.4
D 2 234 80236 143.94 2225 2162 542.4
D 2 120 31758 54.56 2225 2162 542.4

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