ASTROSAT CZTI

Data Quality Report

Orbit 40311

Creation date: 2024-06-27T22:14:48.636842
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/AS1A12_056T02_9000005538_40311cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40311cztM0_level2_quad_clean.evt
Size (bytes)1,627,833,600332,873,280
Size1.5 GB 317.5 MB
Events in quadrant A13,447,6232,313,550
Events in quadrant B11,594,0672,394,427
Events in quadrant C10,920,4762,304,349
Events in quadrant D22,686,5761,633,283

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0528206
B0478985
C0448835
D0815105

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04260
B04260
C04260
D04260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A208055152.475366%
B208052991.437155%
C208052331.119923%
D20805464822.340783%

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 27760 20811 415 415 1.49% 1.99%
B 27760 20811 206 206 0.74% 0.99%
C 27760 20811 212 212 0.76% 1.02%
D 27760 20811 4472 4472 16.11% 21.49%

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 10 83 1655027 3480.56 2336 2289 474.8
A 13 248 1437241 3021.92 2336 2289 474.8
A 6 10 687625 1443.27 2336 2289 474.8
B 5 255 899857 2009.73 2331 2270 446.6
B 7 202 682816 1523.77 2331 2270 446.6
B 4 170 186356 412.17 2331 2270 446.6
C 14 254 977809 1840.61 2291 2305 530.0
C 15 214 876993 1650.39 2291 2305 530.0
C 9 187 50965 91.81 2291 2305 530.0
D 12 227 12366920 25447.62 1978 1923 485.9
D 2 250 991955 2037.52 1978 1923 485.9
D 1 47 589957 1210.2 1978 1923 485.9

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