ASTROSAT CZTI

Data Quality Report

Orbit 19655

Creation date: 2024-06-27T18:05:15.730686
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_003T02_9000002926_19655cztM0_level2.evt modeM0/AS1A06_003T02_9000002926_19655cztM0_level2_quad_clean.evt
Size (bytes)170,850,24032,385,600
Size162.9 MB 30.9 MB
Events in quadrant A1,090,185208,264
Events in quadrant B1,199,164215,726
Events in quadrant C1,118,141200,524
Events in quadrant D1,609,592191,361

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A047151
B050141
C047591
D062721

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A227710.043917%
B227730.131752%
C227770.307422%
D22771335.841019%

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 2277 2277 0 0 0.00% 0.00%
B 2277 2277 0 0 0.00% 0.00%
C 2277 2277 0 0 0.00% 0.00%
D 2277 2277 148 148 6.50% 6.50%

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 11 29 4680 76.37 282 277 57.7
A 13 254 2886 45.25 282 277 57.7
A 0 226 2423 37.22 282 277 57.7
B 12 0 38931 694.37 287 281 55.7
B 4 80 18050 319.23 287 281 55.7
B 3 112 6595 113.43 287 281 55.7
C 14 238 43445 664.92 272 274 64.9
C 3 233 12519 188.6 272 274 64.9
C 13 61 1947 25.77 272 274 64.9
D 1 52 540355 8342.29 260 253 64.7
D 2 16 39815 611.07 260 253 64.7
D 12 218 33201 508.91 260 253 64.7

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