ASTROSAT CZTI

Data Quality Report

Orbit 16465

Creation date: 2024-06-27T17:23:11.218447
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/AS1C04_008T01_9000002434_16465cztM0_level2.evt modeM0/AS1C04_008T01_9000002434_16465cztM0_level2_quad_clean.evt
Size (bytes)635,385,600101,286,720
Size606.0 MB 96.6 MB
Events in quadrant A4,051,243638,555
Events in quadrant B4,531,355644,497
Events in quadrant C4,360,747617,202
Events in quadrant D5,736,570590,217

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171883
B0184652
C0178842
D0226302

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83031241.493436%
B83031702.047453%
C83031561.878839%
D83035917.117909%

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 9559 8304 2 2 0.02% 0.02%
B 9559 8304 22 22 0.23% 0.26%
C 9559 8304 0 0 0.00% 0.00%
D 9559 8304 438 438 4.58% 5.27%

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 40219 185.38 1043 1025 211.4
A 0 226 9109 38.24 1043 1025 211.4
A 12 194 7675 31.45 1043 1025 211.4
B 15 35 166817 825.63 1038 1015 200.8
B 4 48 139502 689.61 1038 1015 200.8
B 0 198 64278 315.03 1038 1015 200.8
C 3 233 293233 1244.16 997 1005 234.9
C 14 238 151363 640.15 997 1005 234.9
C 7 247 26875 110.14 997 1005 234.9
D 2 33 848794 3500.11 989 960 242.2
D 12 218 726501 2995.25 989 960 242.2
D 12 110 327809 1349.33 989 960 242.2

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