ASTROSAT CZTI

Data Quality Report

Orbit 26256

Creation date: 2024-06-27T19:26:40.085383
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/AS1A09_079T03_9000003790_26256cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26256cztM0_level2_quad_clean.evt
Size (bytes)518,814,720112,507,200
Size494.8 MB 107.3 MB
Events in quadrant A3,896,598736,200
Events in quadrant B3,299,866779,513
Events in quadrant C3,993,816748,050
Events in quadrant D4,099,535708,784

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156030
B0137750
C0159960
D0164100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62341582.534488%
B6233580.930531%
C62333044.877266%
D62332734.379913%

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 7529 6235 76 76 1.01% 1.22%
B 7528 6234 3 3 0.04% 0.05%
C 7528 6234 124 124 1.65% 1.99%
D 7528 6234 234 234 3.11% 3.75%

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 13 747236 4582.77 815 801 162.9
A 13 254 11001 62.62 815 801 162.9
A 0 226 6989 37.99 815 801 162.9
B 5 172 24417 152.7 834 816 154.6
B 12 111 17605 108.63 834 816 154.6
B 0 230 16004 98.27 834 816 154.6
C 4 254 682691 3688.45 801 808 184.9
C 14 238 130234 700.09 801 808 184.9
C 3 233 30801 162.24 801 808 184.9
D 1 52 690343 3644.54 792 773 189.2
D 15 0 320530 1689.99 792 773 189.2
D 12 233 46468 241.51 792 773 189.2

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