ASTROSAT CZTI

Data Quality Report

Orbit 50880

Creation date: 2025-02-23T12:49:53.906743
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/AS1C07_001T01_9000006450_50880cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50880cztM0_level2_quad_clean.evt
Size (bytes)452,810,88087,140,160
Size431.8 MB 83.1 MB
Events in quadrant A3,744,169564,186
Events in quadrant B2,969,489619,334
Events in quadrant C5,622,322516,868
Events in quadrant D3,939,534501,322

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151751
B0135201
C0210101
D0163631

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62532043.262434%
B62541191.902782%
C62545889.401983%
D62542894.621043%

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 7048 6254 123 123 1.75% 1.97%
B 7049 6255 37 37 0.52% 0.59%
C 7049 6255 420 420 5.96% 6.71%
D 7049 6255 211 211 2.99% 3.37%

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 4 249 164924 1028.92 648 633 159.7
A 4 4 154172 961.58 648 633 159.7
A 8 38 140553 876.29 648 633 159.7
B 2 249 103074 729.52 648 626 140.4
B 4 81 94631 669.4 648 626 140.4
B 1 255 27138 188.79 648 626 140.4
C 13 3 1019455 6135.27 604 599 166.1
C 1 29 637588 3835.77 604 599 166.1
C 5 10 461786 2777.14 604 599 166.1
D 11 245 491462 2863.51 618 596 171.4
D 2 249 441377 2571.34 618 596 171.4
D 2 216 106684 618.87 618 596 171.4

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