ASTROSAT CZTI

Data Quality Report

Orbit 52600

Creation date: 2025-06-19T07:34:33.339265
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/AS1C09_011T06_9000006478_52600cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52600cztM0_level2_quad_clean.evt
Size (bytes)770,754,24079,171,200
Size735.0 MB 75.5 MB
Events in quadrant A3,256,935592,750
Events in quadrant B4,063,072640,849
Events in quadrant C6,437,275530,291
Events in quadrant D14,281,517190,089

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145031
B0166111
C0236481
D0468248

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63481552.441714%
B63491442.268074%
C634971711.293117%
D6348450871.014493%

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 7473 6349 118 118 1.58% 1.86%
B 7474 6350 62 62 0.83% 0.98%
C 7474 6350 660 660 8.83% 10.39%
D 7473 6349 4621 4621 61.84% 72.78%

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 4 249 373367 2332.38 639 624 159.8
A 3 28 63853 395.65 639 624 159.8
A 5 243 52147 322.4 639 624 159.8
B 10 254 541674 3963.36 645 623 136.5
B 10 128 344686 2520.36 645 623 136.5
B 4 171 77827 565.54 645 623 136.5
C 15 248 2793642 16290.76 612 607 171.4
C 1 44 432310 2517.97 612 607 171.4
C 15 192 252052 1466.59 612 607 171.4
D 12 16 7440316 62111.08 399 379 119.8
D 8 176 2334911 19489.45 399 379 119.8
D 15 125 703598 5870.71 399 379 119.8

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