ASTROSAT CZTI

Data Quality Report

Orbit 27314

Creation date: 2024-06-27T19:38:47.003678
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/AS1T03_255T01_9000003922_27314cztM0_level2.evt modeM0/AS1T03_255T01_9000003922_27314cztM0_level2_quad_clean.evt
Size (bytes)477,959,040117,570,240
Size455.8 MB 112.1 MB
Events in quadrant A3,470,265817,820
Events in quadrant B3,526,661809,133
Events in quadrant C3,354,386753,852
Events in quadrant D3,709,937754,717

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142300
B0143000
C0137590
D0148750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60951532.510254%
B60951963.215751%
C60941642.691172%
D60941582.592714%

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 7400 6095 22 22 0.30% 0.36%
B 7400 6095 41 41 0.55% 0.67%
C 7399 6094 10 10 0.14% 0.16%
D 7399 6094 42 42 0.57% 0.69%

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 13 248 102876 589.77 872 859 173.0
A 13 254 10205 54.03 872 859 173.0
A 0 226 7810 40.18 872 859 173.0
B 5 172 137906 865.0 847 832 158.5
B 0 190 22835 138.85 847 832 158.5
B 10 245 21637 131.29 847 832 158.5
C 14 238 129689 692.41 805 812 186.1
C 2 16 81170 431.74 805 812 186.1
C 15 208 7220 34.43 805 812 186.1
D 1 52 305455 1428.81 827 808 213.2
D 2 250 147854 689.66 827 808 213.2
D 2 234 25428 115.47 827 808 213.2

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