ASTROSAT CZTI

Data Quality Report

Orbit 54452

Creation date: 2025-10-22T01:45:37.678066
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_126T19_9000006518_54452cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54452cztM0_level2_quad_clean.evt
Size (bytes)1,799,346,240233,112,960
Size1.7 GB 222.3 MB
Events in quadrant A9,978,0021,654,853
Events in quadrant B8,938,2251,814,936
Events in quadrant C11,169,7091,594,541
Events in quadrant D35,059,676693,197

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0434493
B0407903
C0469533
D01167369

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188607413.928950%
B188614952.624463%
C188618174.331690%
D188601101558.404030%

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 19915 18863 448 448 2.25% 2.38%
B 19916 18864 99 99 0.50% 0.52%
C 19916 18864 560 560 2.81% 2.97%
D 19914 18862 10207 10207 51.26% 54.11%

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 5 243 1243051 2539.41 1992 1935 488.7
A 8 9 529721 1079.89 1992 1935 488.7
A 8 6 158201 319.73 1992 1935 488.7
B 5 185 391857 921.69 1981 1906 423.1
B 10 247 159040 371.4 1981 1906 423.1
B 0 213 108877 252.84 1981 1906 423.1
C 13 3 2499035 4691.84 1937 1913 532.2
C 15 147 374407 699.88 1937 1913 532.2
C 11 244 298544 557.34 1937 1913 532.2
D 15 108 16041491 47454.24 1200 1148 338.0
D 7 70 9724316 28765.32 1200 1148 338.0
D 8 176 1905547 5634.03 1200 1148 338.0

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