ASTROSAT CZTI

Data Quality Report

Orbit 20231111_A13_023T01_9000005916_level2

Creation date: 2023-11-17T15:50:18.073964
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/AS1A13_023T01_9000005916cztM0_level2.fits modeM0/AS1A13_023T01_9000005916cztM0_level2_quad_clean.evt
Size (bytes)375,721,920339,586,560
Size358.3 MB 323.9 MB
Events in quadrant A2,213,4441,902,184
Events in quadrant B2,183,4661,971,047
Events in quadrant C2,268,6741,914,066
Events in quadrant D1,908,2821,692,973

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08280
B08280
C08280
D08280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0650
B0650
C0650
D0650

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01348850
B0951740
C0862690
D01053210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4082218814.607810%
B4082213053.196806%
C408225381.317917%
D4082216624.071334%

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 47236 40819 0 0 0.00% 0.00%
B 47236 40818 0 0 0.00% 0.00%
C 47236 40821 0 0 0.00% 0.00%
D 47236 40774 0 0 0.00% 0.00%

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 29 1814 8.61 577 541 147.9
A 7 110 1791 8.45 577 541 147.9
A 15 236 1744 8.13 577 541 147.9
B 2 9 1996 12.5 577 549 115.7
B 2 8 1630 9.34 577 549 115.7
B 3 17 1608 9.15 577 549 115.7
C 1 81 1756 7.8 600 560 153.3
C 1 80 1722 7.58 600 560 153.3
C 3 202 1711 7.51 600 560 153.3
D 10 189 1441 6.23 549 499 151.2
D 3 14 1403 5.98 549 499 151.2
D 7 3 1387 5.87 549 499 151.2

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