ASTROSAT CZTI

Data Quality Report

Orbit 27572

Creation date: 2024-06-27T19:41:37.313878
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/AS1A09_038T13_9000003966_27572cztM0_level2.evt modeM0/AS1A09_038T13_9000003966_27572cztM0_level2_quad_clean.evt
Size (bytes)103,783,68031,392,000
Size99.0 MB 29.9 MB
Events in quadrant A736,788213,023
Events in quadrant B783,637220,730
Events in quadrant C739,689207,988
Events in quadrant D780,636199,865

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030910
B032690
C030850
D032490

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A146070.479452%
B146030.205479%
C146060.410959%
D146050.342466%

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 1460 1460 4 4 0.27% 0.27%
B 1460 1460 1 1 0.07% 0.07%
C 1460 1460 0 0 0.00% 0.00%
D 1460 1460 1 1 0.07% 0.07%

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 8 192 9599 232.63 188 185 40.5
A 13 254 2813 64.94 188 185 40.5
A 3 137 1765 39.04 188 185 40.5
B 0 183 11941 311.4 190 186 37.7
B 0 230 7687 198.71 190 186 37.7
B 0 244 6499 167.24 190 186 37.7
C 14 238 29338 670.88 178 179 43.5
C 4 175 12316 279.24 178 179 43.5
C 1 16 1913 39.89 178 179 43.5
D 1 52 78210 1776.1 175 170 43.9
D 2 250 21531 486.15 175 170 43.9
D 6 112 8379 186.83 175 170 43.9

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