ASTROSAT CZTI

Data Quality Report

Orbit 51610

Creation date: 2025-04-15T10:06:22.721432
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_037T05_9000006460_51610cztM0_level2.fits modeM0/AS1A13_037T05_9000006460_51610cztM0_level2_quad_clean.evt
Size (bytes)703,857,60079,920,000
Size671.3 MB 76.2 MB
Events in quadrant A4,763,736560,962
Events in quadrant B7,330,927501,527
Events in quadrant C5,728,538492,972
Events in quadrant D7,768,571447,316

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181932
B0258051
C0211951
D0272641

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59745258.788082%
B5974169028.289253%
C5974108818.212253%
D5974130021.760964%

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 7069 5974 368 368 5.21% 6.16%
B 7069 5974 1404 1404 19.86% 23.50%
C 7068 5973 913 913 12.92% 15.29%
D 7069 5974 1206 1206 17.06% 20.19%

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 4 175 582975 3638.08 653 639 160.1
A 8 249 491136 3064.33 653 639 160.1
A 15 174 305286 1903.25 653 639 160.1
B 5 172 3769208 30871.16 568 547 122.1
B 1 223 291060 2379.75 568 547 122.1
B 10 44 257179 2102.21 568 547 122.1
C 13 3 3020536 18511.6 593 589 163.1
C 12 254 149818 914.74 593 589 163.1
C 12 112 58459 354.73 593 589 163.1
D 8 176 2165028 12948.86 599 578 167.2
D 2 62 995464 5951.92 599 578 167.2
D 1 3 817254 4885.78 599 578 167.2

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