ASTROSAT CZTI

Data Quality Report

Orbit 14048

Creation date: 2024-06-27T16:49:38.612780
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/AS1A04_162T01_9000002074_14048cztM0_level2.evt modeM0/AS1A04_162T01_9000002074_14048cztM0_level2_quad_clean.evt
Size (bytes)1,332,089,280343,848,960
Size1.2 GB 327.9 MB
Events in quadrant A8,977,5812,316,992
Events in quadrant B10,435,2042,339,233
Events in quadrant C9,106,3302,271,517
Events in quadrant D10,546,9102,186,869

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390784
B0430423
C0395883
D0435023

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188872421.281305%
B188874302.276698%
C188872751.456028%
D188873561.884894%

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 20863 18893 4 4 0.02% 0.02%
B 20863 18893 54 54 0.26% 0.29%
C 20863 18893 56 56 0.27% 0.30%
D 20863 18893 151 151 0.72% 0.80%

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 12 189 214720 475.63 2210 2156 446.9
A 8 15 143970 317.32 2210 2156 446.9
A 15 222 47173 100.73 2210 2156 446.9
B 0 219 708102 1690.91 2207 2148 417.5
B 0 189 464473 1107.37 2207 2148 417.5
B 10 245 197471 467.84 2207 2148 417.5
C 0 207 386585 781.9 2141 2143 491.7
C 3 233 358699 725.19 2141 2143 491.7
C 13 61 15240 26.64 2141 2143 491.7
D 1 52 727752 1298.2 2118 2064 559.0
D 8 195 681774 1215.94 2118 2064 559.0
D 15 0 221334 392.26 2118 2064 559.0

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