ASTROSAT CZTI

Data Quality Report

Orbit 52549

Creation date: 2025-06-16T12:24:13.777307
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_52549cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52549cztM0_level2_quad_clean.evt
Size (bytes)2,423,747,520212,829,120
Size2.3 GB 203.0 MB
Events in quadrant A9,745,3891,711,933
Events in quadrant B16,849,3141,706,723
Events in quadrant C21,377,8631,255,883
Events in quadrant D40,293,592469,942

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0423912
B0631352
C0767882
D01324822

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188423862.048615%
B1884316538.772488%
C18843460724.449398%
D188431386573.581701%

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 19732 18845 165 165 0.84% 0.88%
B 19733 18846 868 868 4.40% 4.61%
C 19733 18846 3444 3444 17.45% 18.27%
D 19733 18844 12087 12087 61.25% 64.14%

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 319455 639.08 1993 1943 496.8
A 4 159 279133 557.92 1993 1943 496.8
A 4 61 223537 446.02 1993 1943 496.8
B 4 170 2497449 6198.0 1911 1844 402.6
B 10 44 1834507 4551.54 1911 1844 402.6
B 10 254 1096836 2719.48 1911 1844 402.6
C 15 224 6696016 14325.71 1690 1672 467.3
C 13 3 1855451 3967.04 1690 1672 467.3
C 15 147 1453973 3107.88 1690 1672 467.3
D 6 42 23928084 74076.78 1108 1054 323.0
D 7 126 2384255 7378.26 1108 1054 323.0
D 11 176 2192473 6784.51 1108 1054 323.0

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