ASTROSAT CZTI

Data Quality Report

Orbit 27897

Creation date: 2024-06-27T19:45:43.721558
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_048T01_9000004028_27897cztM0_level2.evt modeM0/AS1A10_048T01_9000004028_27897cztM0_level2_quad_clean.evt
Size (bytes)66,625,92017,017,920
Size63.5 MB 16.2 MB
Events in quadrant A435,318115,376
Events in quadrant B435,764117,182
Events in quadrant C428,040109,089
Events in quadrant D658,968107,799

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018070
B018020
C017820
D025420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A832131.562500%
B832121.442308%
C832131.562500%
D832283.365385%

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 832 832 0 0 0.00% 0.00%
B 832 832 0 0 0.00% 0.00%
C 832 832 0 0 0.00% 0.00%
D 832 832 17 17 2.04% 2.04%

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 8 192 4590 182.39 111 108 24.6
A 13 254 1430 53.8 111 108 24.6
A 3 137 1147 42.28 111 108 24.6
B 12 111 2708 109.83 110 108 23.7
B 11 111 2322 93.53 110 108 23.7
B 14 111 2113 84.7 110 108 23.7
C 14 238 17188 657.7 102 102 26.0
C 3 233 10075 383.89 102 102 26.0
C 2 16 1557 56.01 102 102 26.0
D 13 104 82166 3024.68 103 99 27.1
D 2 250 70068 2578.8 103 99 27.1
D 1 52 58341 2146.58 103 99 27.1

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