ASTROSAT CZTI

Data Quality Report

Orbit 28557

Creation date: 2024-06-27T19:53:18.688718
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_102T07_9000004102_28557cztM0_level2.evt modeM0/AS1A10_102T07_9000004102_28557cztM0_level2_quad_clean.evt
Size (bytes)458,438,40098,023,680
Size437.2 MB 93.5 MB
Events in quadrant A3,194,967657,776
Events in quadrant B3,340,666663,953
Events in quadrant C3,265,980617,065
Events in quadrant D3,678,172613,958

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133001
B0136881
C0134481
D0147031

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5958751.258812%
B59581021.711984%
C59581161.946962%
D5959751.258600%

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 7153 5958 0 0 0.00% 0.00%
B 7153 5958 10 10 0.14% 0.17%
C 7153 5958 0 0 0.00% 0.00%
D 7154 5959 40 40 0.56% 0.67%

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 15 174 43133 261.77 817 804 161.7
A 13 254 8945 50.35 817 804 161.7
A 3 137 7373 40.62 817 804 161.7
B 4 171 133588 864.35 804 787 153.6
B 10 245 29704 188.21 804 787 153.6
B 12 111 18504 115.31 804 787 153.6
C 3 233 127414 713.51 761 767 177.5
C 14 238 124057 694.6 761 767 177.5
C 7 247 51034 283.2 761 767 177.5
D 8 195 471174 2571.8 781 764 182.9
D 1 52 198137 1079.07 781 764 182.9
D 2 234 22222 117.31 781 764 182.9

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