ASTROSAT CZTI

Data Quality Report

Orbit 20707

Creation date: 2024-06-27T18:18:36.842156
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/AS1A05_165T07_9000003062_20707cztM0_level2.evt modeM0/AS1A05_165T07_9000003062_20707cztM0_level2_quad_clean.evt
Size (bytes)1,232,700,480224,591,040
Size1.1 GB 214.2 MB
Events in quadrant A8,600,0421,419,357
Events in quadrant B9,315,4571,409,918
Events in quadrant C8,750,3371,355,278
Events in quadrant D9,414,0411,341,655

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0377554
B0396214
C0379364
D0405334

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185231510.815203%
B185242711.462967%
C185242251.214640%
D185242361.274023%

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 21078 18527 0 0 0.00% 0.00%
B 21079 18528 45 45 0.21% 0.24%
C 21079 18528 0 0 0.00% 0.00%
D 21079 18528 66 66 0.31% 0.36%

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 0 226 19149 37.82 2236 2190 448.4
A 3 137 18356 36.05 2236 2190 448.4
A 12 194 15950 30.69 2236 2190 448.4
B 7 220 395664 937.52 2211 2151 419.7
B 0 197 74231 171.73 2211 2151 419.7
B 12 111 51791 118.26 2211 2151 419.7
C 14 238 329626 659.78 2122 2134 496.4
C 3 233 69079 134.87 2122 2134 496.4
C 7 247 28777 53.68 2122 2134 496.4
D 2 165 394192 751.52 2154 2095 521.7
D 1 52 271703 516.75 2154 2095 521.7
D 5 222 163133 308.66 2154 2095 521.7

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