ASTROSAT CZTI

Data Quality Report

Orbit 54323

Creation date: 2025-10-13T10:18:07.976409
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_54323cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54323cztM0_level2_quad_clean.evt
Size (bytes)1,649,499,840237,263,040
Size1.5 GB 226.3 MB
Events in quadrant A10,156,6171,639,882
Events in quadrant B8,606,8491,798,730
Events in quadrant C14,537,0691,467,033
Events in quadrant D26,357,0051,027,820

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0433904
B0388864
C0564794
D0909314

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A181387153.942000%
B181381280.705701%
C18138183910.138935%
D18139592232.647886%

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 20453 18141 541 541 2.65% 2.98%
B 20453 18141 57 57 0.28% 0.31%
C 20453 18141 1656 1656 8.10% 9.13%
D 20454 18142 4991 4991 24.40% 27.51%

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 1941768 4196.55 1872 1826 462.3
A 0 8 285961 614.65 1872 1826 462.3
A 4 78 160691 343.66 1872 1826 462.3
B 5 172 223004 554.48 1878 1806 398.9
B 0 213 220363 547.86 1878 1806 398.9
B 0 171 202309 502.61 1878 1806 398.9
C 1 241 3445544 7115.35 1769 1749 484.0
C 1 16 2417059 4990.36 1769 1749 484.0
C 1 29 655152 1350.02 1769 1749 484.0
D 8 176 7232934 16274.17 1540 1464 444.4
D 15 108 5734066 12901.02 1540 1464 444.4
D 2 172 5007087 11264.98 1540 1464 444.4

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