ASTROSAT CZTI

Data Quality Report

Orbit 54310

Creation date: 2025-10-12T10:11:03.879918
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/AS1A14_126T15_9000006516_54310cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54310cztM0_level2_quad_clean.evt
Size (bytes)601,208,64092,833,920
Size573.4 MB 88.5 MB
Events in quadrant A3,537,844647,848
Events in quadrant B3,696,495706,858
Events in quadrant C3,237,081634,801
Events in quadrant D11,242,518336,686

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158152
B0157422
C0149062
D0381942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69541652.372735%
B6955871.250899%
C6955450.647017%
D6955335848.281812%

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 8844 6956 126 126 1.42% 1.81%
B 8845 6957 31 31 0.35% 0.45%
C 8845 6957 23 23 0.26% 0.33%
D 8845 6956 2849 2849 32.21% 40.96%

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 7 29 355103 1986.21 722 706 178.4
A 15 174 265531 1484.2 722 706 178.4
A 0 8 29200 159.69 722 706 178.4
B 7 0 355639 2272.21 723 697 156.2
B 0 213 210953 1345.98 723 697 156.2
B 5 185 112554 716.07 723 697 156.2
C 15 157 201635 1011.15 712 702 198.7
C 14 254 82634 412.31 712 702 198.7
C 12 252 61179 304.34 712 702 198.7
D 8 176 8641844 59781.78 504 481 144.5
D 2 172 283189 1955.8 504 481 144.5
D 3 12 150954 1040.99 504 481 144.5

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