ASTROSAT CZTI

Data Quality Report

Orbit 17746

Creation date: 2024-06-27T17:40:22.870791
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/AS1T03_070T04_9000002638_17746cztM0_level2.evt modeM0/AS1T03_070T04_9000002638_17746cztM0_level2_quad_clean.evt
Size (bytes)100,687,68024,042,240
Size96.0 MB 22.9 MB
Events in quadrant A606,096166,374
Events in quadrant B1,017,655161,672
Events in quadrant C625,727160,022
Events in quadrant D719,246152,570

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024711
B037641
C025081
D028681

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A114030.263158%
B11411079.377739%
C114140.350570%
D1141292.541630%

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 1140 1140 0 0 0.00% 0.00%
B 1141 1141 101 101 8.85% 8.85%
C 1141 1141 0 0 0.00% 0.00%
D 1141 1141 32 32 2.80% 2.80%

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 15 174 17673 548.17 152 150 32.0
A 0 226 1320 36.6 152 150 32.0
A 12 194 1131 30.69 152 150 32.0
B 10 245 391305 13010.33 150 146 30.1
B 0 230 22350 738.53 150 146 30.1
B 0 219 9016 295.02 150 146 30.1
C 14 238 23716 642.95 150 151 36.7
C 5 218 8952 240.13 150 151 36.7
C 1 16 4072 106.98 150 151 36.7
D 7 238 107395 2924.18 146 142 36.7
D 10 70 40771 1107.72 146 142 36.7
D 7 38 7679 205.49 146 142 36.7

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