ASTROSAT CZTI

Data Quality Report

Orbit 19428

Creation date: 2024-06-27T18:02:49.844220
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/AS1A05_221T01_9000002888_19428cztM0_level2.evt modeM0/AS1A05_221T01_9000002888_19428cztM0_level2_quad_clean.evt
Size (bytes)537,736,32085,734,720
Size512.8 MB 81.8 MB
Events in quadrant A3,439,642538,956
Events in quadrant B3,581,631542,252
Events in quadrant C3,946,822524,320
Events in quadrant D4,839,054499,672

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146552
B0150252
C0161252
D0191703

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7051500.709119%
B7051951.347327%
C70512052.907389%
D70504626.553191%

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 7661 7052 0 0 0.00% 0.00%
B 7661 7052 17 17 0.22% 0.24%
C 7661 7052 26 26 0.34% 0.37%
D 7660 7051 426 426 5.56% 6.04%

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 9 143 18439 98.08 883 862 179.2
A 13 254 11470 59.19 883 862 179.2
A 12 96 11018 56.67 883 862 179.2
B 7 220 74627 441.13 877 855 167.2
B 0 197 42370 248.24 877 855 167.2
B 12 111 19710 112.75 877 855 167.2
C 9 221 452654 2297.99 841 846 196.6
C 14 238 129552 654.62 841 846 196.6
C 0 207 63614 319.25 841 846 196.6
D 15 0 731187 3550.41 838 812 205.7
D 7 238 486719 2362.03 838 812 205.7
D 12 218 220649 1068.64 838 812 205.7

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