ASTROSAT CZTI

Data Quality Report

Orbit 08799

Creation date: 2024-06-27T15:37:23.704840
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/AS1A03_135T01_9000001226_08799cztM0_level2.evt modeM0/AS1A03_135T01_9000001226_08799cztM0_level2_quad_clean.evt
Size (bytes)191,859,84029,090,880
Size183.0 MB 27.7 MB
Events in quadrant A1,167,817195,443
Events in quadrant B1,025,440197,298
Events in quadrant C984,257188,542
Events in quadrant D2,512,048170,868

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A047652
B041651
C039694
D087131

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1746885.040092%
B1746714.066438%
C1745583.323782%
D174667638.717068%

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 3036 1746 1 1 0.03% 0.06%
B 3036 1746 1 1 0.03% 0.06%
C 3036 1746 0 0 0.00% 0.00%
D 3036 1746 470 470 15.48% 26.92%

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 8 5 145927 2633.55 264 258 55.3
A 13 14 3332 55.57 264 258 55.3
A 0 226 2457 39.76 264 258 55.3
B 4 48 16633 321.5 259 253 50.9
B 12 111 5324 99.53 259 253 50.9
B 11 111 4678 86.85 259 253 50.9
C 13 61 1892 27.49 252 253 59.6
C 8 222 708 7.63 252 253 59.6
C 1 3 666 6.93 252 253 59.6
D 2 16 1545803 26813.98 219 213 57.6
D 1 52 69653 1204.69 219 213 57.6
D 2 152 37019 638.54 219 213 57.6

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