ASTROSAT CZTI

Data Quality Report

Orbit 11964

Creation date: 2024-06-27T16:20:42.576766
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/AS1G08_076T03_9000001768_11964cztM0_level2.evt modeM0/AS1G08_076T03_9000001768_11964cztM0_level2_quad_clean.evt
Size (bytes)121,936,32017,619,840
Size116.3 MB 16.8 MB
Events in quadrant A841,537105,201
Events in quadrant B1,069,096104,262
Events in quadrant C746,929108,044
Events in quadrant D927,707101,164

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034182
B041631
C031601
D037111

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1547211.357466%
B1547674.330963%
C154760.387847%
D1547362.327085%

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 1548 1548 0 0 0.00% 0.00%
B 1548 1548 32 32 2.07% 2.07%
C 1548 1548 0 0 0.00% 0.00%
D 1548 1548 30 30 1.94% 1.94%

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 1 162 27043 625.58 201 196 42.9
A 1 178 13295 305.23 201 196 42.9
A 1 161 11754 269.32 201 196 42.9
B 4 239 173763 4314.49 197 192 40.2
B 0 219 56726 1405.28 197 192 40.2
B 11 51 33889 837.61 197 192 40.2
C 13 61 1397 26.04 191 191 46.3
C 0 207 1195 21.68 191 191 46.3
C -1 -1 -1 -1.0 191 191 46.3
D 1 52 157471 3318.41 191 185 47.4
D 10 50 20405 426.6 191 185 47.4
D 8 195 10879 225.62 191 185 47.4

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