ASTROSAT CZTI

Data Quality Report

Orbit 18348

Creation date: 2024-06-27T17:48:39.945665
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/AS1A06_006T01_9000002720_18348cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18348cztM0_level2_quad_clean.evt
Size (bytes)487,857,60091,716,480
Size465.3 MB 87.5 MB
Events in quadrant A3,171,490587,392
Events in quadrant B3,364,205589,556
Events in quadrant C3,254,170572,227
Events in quadrant D4,524,750556,148

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139212
B0143023
C0141182
D0181742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6780420.619469%
B6779620.914589%
C6780670.988201%
D67803745.516224%

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 8420 6782 2 2 0.02% 0.03%
B 8419 6781 10 10 0.12% 0.15%
C 8420 6782 1 1 0.01% 0.01%
D 8420 6782 326 326 3.87% 4.81%

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 24571 142.73 814 796 166.6
A 4 2 15023 85.41 814 796 166.6
A 0 226 7190 38.39 814 796 166.6
B 7 220 47370 294.28 818 797 158.3
B 0 197 26875 164.78 818 797 158.3
B 4 48 25165 153.97 818 797 158.3
C 14 238 119361 643.24 778 783 184.3
C 3 233 47337 252.54 778 783 184.3
C 0 207 41930 223.21 778 783 184.3
D 1 52 1147090 5976.68 777 754 191.8
D 2 69 151148 784.11 777 754 191.8
D 2 33 78886 407.36 777 754 191.8

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