ASTROSAT CZTI

Data Quality Report

Orbit 52477

Creation date: 2025-06-26T15:37:33.849985
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_037T01_9000006476_52477cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52477cztM0_level2_quad_clean.evt
Size (bytes)2,999,240,640165,709,440
Size2.8 GB 158.0 MB
Events in quadrant A12,766,7731,548,226
Events in quadrant B17,181,2821,703,280
Events in quadrant C34,576,955507,340
Events in quadrant D45,094,4371,085

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0506813
B0635653
C01151683
D01464034

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1822314748.088679%
B1822417539.619183%
C182241311271.949078%
D182231821599.956099%

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 19733 18226 960 960 4.86% 5.27%
B 19734 18227 1101 1101 5.58% 6.04%
C 19734 18226 8968 8968 45.44% 49.20%
D 19732 18219 17091 17091 86.62% 93.81%

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 10 17 1993245 4250.16 1909 1861 468.5
A 4 61 897337 1911.19 1909 1861 468.5
A 10 16 503937 1071.57 1909 1861 468.5
B 10 254 5850292 14235.14 1908 1832 410.8
B 10 44 1091391 2651.98 1908 1832 410.8
B 4 171 832788 2022.54 1908 1832 410.8
C 15 224 19404745 63696.14 1108 1099 304.6
C 15 158 7508617 24644.85 1108 1099 304.6
C 5 80 613490 2010.29 1108 1099 304.6
D 15 93 39154520 333642.28 403 383 117.4
D 6 42 3108610 26485.99 403 383 117.4
D 8 176 316821 2696.45 403 383 117.4

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