ASTROSAT CZTI

Data Quality Report

Orbit 08137

Creation date: 2024-06-27T15:28:29.773847
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/AS1A02_178T01_9000001118_08137cztM0_level2.evt modeM0/AS1A02_178T01_9000001118_08137cztM0_level2_quad_clean.evt
Size (bytes)137,499,84017,475,840
Size131.1 MB 16.7 MB
Events in quadrant A1,992,05587,684
Events in quadrant B732,435118,730
Events in quadrant C682,714115,905
Events in quadrant D666,673109,413

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A067981
B030151
C028601
D028421

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A128860747.127329%
B1288453.493789%
C1288131.009317%
D128890.698758%

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 2393 1288 504 504 21.06% 39.13%
B 2393 1289 0 0 0.00% 0.00%
C 2393 1289 0 0 0.00% 0.00%
D 2393 1289 1 1 0.04% 0.08%

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 13 170 1483109 53479.62 123 120 27.7
A 13 248 33979 1221.02 123 120 27.7
A 0 226 1135 36.6 123 120 27.7
B 0 214 21164 577.89 177 172 36.3
B 0 197 7088 190.39 177 172 36.3
B 0 219 6821 183.04 177 172 36.3
C 1 16 18639 440.04 170 170 42.0
C 13 61 1314 27.26 170 170 42.0
C 14 67 549 9.03 170 170 42.0
D 1 52 20440 471.93 168 162 43.0
D 12 233 7051 160.33 168 162 43.0
D 2 234 3997 89.25 168 162 43.0

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