ASTROSAT CZTI

Data Quality Report

Orbit 20151126_P01_999T99_9000000132_level2

Creation date: 2025-10-24T10:24:08.758067
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_999T99_9000000132cztM0_level2.fits modeM0/AS1P01_999T99_9000000132cztM0_level2_quad_clean.evt
Size (bytes)14,886,72015,534,720
Size14.2 MB 14.8 MB
Events in quadrant A83,59685,826
Events in quadrant B82,82286,918
Events in quadrant C79,83484,548
Events in quadrant D69,73877,293

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A076640
B080410
C071330
D067790

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185000.000000%
B185000.000000%
C185010.054054%
D185000.000000%

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 1850 1850 0 0 0.00% 0.00%
B 1849 1849 0 0 0.00% 0.00%
C 1849 1849 0 0 0.00% 0.00%
D 1849 1849 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 7 110 81 8.69 21 20 7.0
A 0 29 71 7.27 21 20 7.0
A 9 191 62 5.99 21 20 7.0
B 2 9 79 9.61 21 21 6.0
B 5 225 60 6.46 21 21 6.0
B 2 18 60 6.46 21 21 6.0
C 3 202 62 6.14 21 19 6.9
C 3 235 60 5.85 21 19 6.9
C 1 80 59 5.71 21 19 6.9
D 1 25 63 7.08 19 18 6.4
D 3 14 61 6.77 19 18 6.4
D 1 26 61 6.77 19 18 6.4

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