ASTROSAT CZTI

Data Quality Report

Orbit 41099

Creation date: 2024-06-27T22:24:26.620236
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_044T19_9000005600_41099cztM0_level2.fits modeM0/AS1A12_044T19_9000005600_41099cztM0_level2_quad_clean.evt
Size (bytes)71,737,92018,414,720
Size68.4 MB 17.6 MB
Events in quadrant A681,659125,628
Events in quadrant B744,977124,308
Events in quadrant C559,551118,145
Events in quadrant D587,492112,180

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027442
B028391
C022251
D023491

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A101270.691700%
B1012454.446640%
C1012111.086957%
D1012131.284585%

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 1012 1012 4 4 0.40% 0.40%
B 1012 1012 31 31 3.06% 3.06%
C 1012 1012 6 6 0.59% 0.59%
D 1012 1012 11 11 1.09% 1.09%

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 166249 5923.44 126 123 28.0
A 2 79 10495 369.83 126 123 28.0
A 7 3 9212 324.08 126 123 28.0
B 0 186 210720 8233.29 121 118 25.6
B 5 255 40725 1587.49 121 118 25.6
B 15 85 15190 589.23 121 118 25.6
C 15 214 47399 1592.79 119 120 29.7
C 0 10 41689 1400.43 119 120 29.7
C 14 254 3504 114.0 119 120 29.7
D 2 249 45422 1432.14 122 119 31.6
D 13 249 26274 826.82 122 119 31.6
D 13 112 12477 390.67 122 119 31.6

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