ASTROSAT CZTI

Data Quality Report

Orbit 27981

Creation date: 2024-06-27T19:46:43.180677
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/AS1A10_065T03_9000004040_27981cztM0_level2.evt modeM0/AS1A10_065T03_9000004040_27981cztM0_level2_quad_clean.evt
Size (bytes)542,090,88097,277,760
Size517.0 MB 92.8 MB
Events in quadrant A3,892,609652,233
Events in quadrant B3,379,429662,704
Events in quadrant C3,520,736614,183
Events in quadrant D5,213,957593,628

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153650
B0137880
C0143640
D0200480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60562494.111625%
B60571412.327885%
C60572053.384514%
D60573876.389302%

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 7316 6056 159 159 2.17% 2.63%
B 7317 6057 2 2 0.03% 0.03%
C 7317 6057 31 31 0.42% 0.51%
D 7317 6057 321 321 4.39% 5.30%

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 6 16 563727 3295.57 863 850 170.8
A 13 254 8132 42.64 863 850 170.8
A 3 137 7763 40.47 863 850 170.8
B 12 111 19606 116.21 855 836 161.5
B 15 33 17809 105.09 855 836 161.5
B 11 111 17801 105.04 855 836 161.5
C 10 22 199834 1064.31 812 821 187.0
C 14 238 132887 706.28 812 821 187.0
C 3 233 26191 135.68 812 821 187.0
D 1 52 1299929 6776.4 814 796 191.7
D 8 195 770575 4015.24 814 796 191.7
D 7 80 57577 296.18 814 796 191.7

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