ASTROSAT CZTI

Data Quality Report

Orbit 50593

Creation date: 2025-02-04T03:17:59.434596
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/AS1T05_239T01_9000006444_50593cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50593cztM0_level2_quad_clean.evt
Size (bytes)544,878,72089,199,360
Size519.6 MB 85.1 MB
Events in quadrant A3,596,112602,294
Events in quadrant B6,426,505548,957
Events in quadrant C4,451,961575,815
Events in quadrant D5,204,927532,822

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151012
B0234562
C0175292
D0198914

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63161231.947435%
B6316121619.252692%
C63162503.958201%
D63154026.365796%

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 7471 6317 91 91 1.22% 1.44%
B 7471 6317 711 711 9.52% 11.26%
C 7471 6317 165 165 2.21% 2.61%
D 7470 6316 331 331 4.43% 5.24%

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 8 38 156783 946.98 664 646 164.9
A 4 3 137421 829.55 664 646 164.9
A 3 130 99179 597.61 664 646 164.9
B 5 172 1636278 12805.81 600 582 127.7
B 4 170 534872 4182.94 600 582 127.7
B 7 0 423664 3312.3 600 582 127.7
C 13 3 285842 1561.97 655 650 182.6
C 15 232 213552 1166.05 655 650 182.6
C 15 158 195166 1065.35 655 650 182.6
D 10 98 1034737 5845.4 636 613 176.9
D 7 96 626460 3537.61 636 613 176.9
D 2 249 293899 1657.8 636 613 176.9

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