ASTROSAT CZTI

Data Quality Report

Orbit 20190428_A05_227T03_9000002862_level2

Creation date: 2025-11-29T16:31:15.966604
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/AS1A05_227T03_9000002862cztM0_level2.fits modeM0/AS1A05_227T03_9000002862cztM0_level2_quad_clean.evt
Size (bytes)45,538,56033,189,120
Size43.4 MB 31.7 MB
Events in quadrant A280,508183,352
Events in quadrant B273,594181,933
Events in quadrant C276,512166,929
Events in quadrant D216,192139,663

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A097670
B0102140
C098750
D0203350

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4732370.781910%
B4732711.500423%
C4732611.289096%
D473285818.131868%

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 5747 4731 0 0 0.00% 0.00%
B 5747 4732 0 0 0.00% 0.00%
C 5747 4731 0 0 0.00% 0.00%
D 5747 4725 0 0 0.00% 0.00%

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 0 29 267 10.2 73 69 19.4
A 7 110 238 8.71 73 69 19.4
A 0 30 224 7.99 73 69 19.4
B 2 9 236 10.22 72 69 16.3
B 2 8 215 8.93 72 69 16.3
B 3 17 182 6.91 72 69 16.3
C 1 81 207 6.87 73 69 20.1
C 1 80 207 6.87 73 69 20.1
C 12 241 201 6.57 73 69 20.1
D 3 159 164 5.98 61 56 18.1
D 6 67 160 5.75 61 56 18.1
D 4 246 160 5.75 61 56 18.1

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