ASTROSAT CZTI

Data Quality Report

Orbit 20160217_P01_175T02_9000000326_level2

Creation date: 2025-10-27T18:38:19.656245
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/AS1P01_175T02_9000000326cztM0_level2.fits modeM0/AS1P01_175T02_9000000326cztM0_level2_quad_clean.evt
Size (bytes)367,027,200502,430,400
Size350.0 MB 479.2 MB
Events in quadrant A2,106,5783,152,629
Events in quadrant B2,121,4583,227,849
Events in quadrant C2,093,3583,048,991
Events in quadrant D1,809,9882,805,055

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0969520
B0900010
C0899420
D0910850

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1139831448885288139831250255918
B1139831448885288139831250255918
C1139831448885288139831250255918
D1139831448885288139831250255918

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08700
B08700
C08700
D08700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4345611802.715390%
B434565221.201215%
C434564090.941182%
D434544561.049386%

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 49365 43455 0 0 0.00% 0.00%
B 49366 43455 0 0 0.00% 0.00%
C 49366 43455 0 0 0.00% 0.00%
D 49366 43452 0 0 0.00% 0.00%

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 0 29 1936 11.08 545 510 128.7
A 14 188 1923 10.98 545 510 128.7
A 7 110 1856 10.46 545 510 128.7
B 2 9 1615 10.68 559 531 101.5
B 14 254 1362 8.19 559 531 101.5
B 10 225 1348 8.05 559 531 101.5
C 12 241 1413 6.68 552 511 135.0
C 9 242 1413 6.68 552 511 135.0
C 3 126 1344 6.17 552 511 135.0
D 3 30 1323 6.92 516 471 123.2
D 10 189 1306 6.78 516 471 123.2
D 1 19 1302 6.75 516 471 123.2

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