ASTROSAT CZTI

Data Quality Report

Orbit 16462

Creation date: 2024-06-27T17:23:03.121345
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_007T02_9000002432_16462cztM0_level2.evt modeM0/AS1C04_007T02_9000002432_16462cztM0_level2_quad_clean.evt
Size (bytes)148,357,44029,396,160
Size141.5 MB 28.0 MB
Events in quadrant A1,230,044190,690
Events in quadrant B1,054,954195,902
Events in quadrant C966,752189,240
Events in quadrant D1,114,928181,021

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A047792
B042601
C040051
D045261

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A180922112.216694%
B18091759.673853%
C18091659.121061%
D18091739.563295%

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 1980 1810 46 46 2.32% 2.54%
B 1980 1810 13 13 0.66% 0.72%
C 1980 1810 0 0 0.00% 0.00%
D 1980 1810 30 30 1.52% 1.66%

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 278105 5293.07 247 242 52.5
A 0 226 2176 36.84 247 242 52.5
A 12 194 1828 30.21 247 242 52.5
B 4 173 51620 1006.51 244 237 51.1
B 15 35 19187 371.2 244 237 51.1
B 0 219 8601 163.84 244 237 51.1
C 14 238 35053 606.35 236 236 57.4
C 0 207 4167 68.45 236 236 57.4
C 8 128 3567 58.0 236 236 57.4
D 1 52 93484 1511.18 241 233 61.7
D 2 33 39042 628.92 241 233 61.7
D 12 218 35724 575.15 241 233 61.7

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