ASTROSAT CZTI

Data Quality Report

Orbit 50560

Creation date: 2025-02-01T23:59:44.749121
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/AS1T05_239T01_9000006444_50560cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50560cztM0_level2_quad_clean.evt
Size (bytes)2,443,034,880199,612,800
Size2.3 GB 190.4 MB
Events in quadrant A13,181,2501,603,791
Events in quadrant B13,530,3951,711,846
Events in quadrant C30,368,508830,747
Events in quadrant D31,955,142645,586

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0513741
B0527581
C01027222
D01071861

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1815510115.568714%
B1815610986.047588%
C18155910750.162490%
D181551066058.716607%

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 19385 18157 682 682 3.52% 3.76%
B 19386 18159 633 633 3.27% 3.49%
C 19385 18157 8253 8253 42.57% 45.45%
D 19385 18157 10042 10042 51.80% 55.31%

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 12 250 1020153 2163.19 1916 1870 470.7
A 8 247 683726 1448.5 1916 1870 470.7
A 4 3 478196 1011.88 1916 1870 470.7
B 0 229 1734870 4312.31 1891 1825 401.9
B 2 2 1363179 3387.44 1891 1825 401.9
B 3 249 465477 1153.7 1891 1825 401.9
C 15 196 4749051 12171.93 1397 1386 390.1
C 15 214 2859295 7327.03 1397 1386 390.1
C 15 178 1949815 4995.33 1397 1386 390.1
D 7 61 10268983 28787.59 1254 1207 356.7
D 15 184 9175530 25721.89 1254 1207 356.7
D 7 60 1556315 4360.03 1254 1207 356.7

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