ASTROSAT CZTI

Data Quality Report

Orbit 20851

Creation date: 2024-06-27T18:20:10.758207
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/AS1A06_009T02_9000003076_20851cztM0_level2.evt modeM0/AS1A06_009T02_9000003076_20851cztM0_level2_quad_clean.evt
Size (bytes)114,981,12027,388,800
Size109.7 MB 26.1 MB
Events in quadrant A662,020185,324
Events in quadrant B712,472185,794
Events in quadrant C681,269179,253
Events in quadrant D1,325,762171,509

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029361
B030191
C029451
D049671

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A144430.207756%
B1444120.831025%
C144450.346260%
D1444312.146814%

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 1443 1443 0 0 0.00% 0.00%
B 1443 1443 0 0 0.00% 0.00%
C 1443 1443 0 0 0.00% 0.00%
D 1443 1443 26 26 1.80% 1.80%

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 0 226 1441 34.18 172 168 37.2
A 3 137 1394 32.92 172 168 37.2
A 12 194 1277 29.78 172 168 37.2
B 0 190 9688 264.68 173 169 36.0
B 0 189 8661 236.12 173 169 36.0
B 7 220 4299 114.83 173 169 36.0
C 14 238 24610 602.81 162 162 40.6
C 3 233 13161 320.51 162 162 40.6
C 7 247 5611 134.36 162 162 40.6
D 1 239 411941 9782.24 161 156 42.1
D 1 20 219077 5200.62 161 156 42.1
D 13 153 27692 654.14 161 156 42.1

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