ASTROSAT CZTI

Data Quality Report

Orbit 43480

Creation date: 2024-06-27T22:52:29.156507
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/AS1A12_018T01_9000005874_43480cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43480cztM0_level2_quad_clean.evt
Size (bytes)486,509,76095,204,160
Size464.0 MB 90.8 MB
Events in quadrant A5,715,834616,045
Events in quadrant B3,156,728663,216
Events in quadrant C2,807,572629,675
Events in quadrant D5,859,169550,689

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213422
B0134752
C0122852
D0216412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60565358.834214%
B6056340.561427%
C6056150.247688%
D60563866.373844%

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 7339 6057 343 343 4.67% 5.66%
B 7339 6057 25 25 0.34% 0.41%
C 7339 6057 10 10 0.14% 0.17%
D 7338 6056 381 381 5.19% 6.29%

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 15 222 2445835 18663.25 634 621 131.0
A 10 83 672009 5124.41 634 621 131.0
A 15 237 74350 562.74 634 621 131.0
B 0 245 210110 1661.0 647 630 126.1
B 0 189 105438 831.04 647 630 126.1
B 0 190 92198 726.06 647 630 126.1
C 15 214 252292 1710.39 629 634 147.1
C 3 233 65164 438.58 629 634 147.1
C 15 159 25656 170.06 629 634 147.1
D 2 16 1170600 7739.32 612 593 151.2
D 13 249 944210 6241.81 612 593 151.2
D 1 52 581131 3840.12 612 593 151.2

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