ASTROSAT CZTI

Data Quality Report

Orbit 20151126_P01_999T99_9000000152_level2

Creation date: 2025-10-24T10:59:31.693055
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_9000000152cztM0_level2.fits modeM0/AS1P01_999T99_9000000152cztM0_level2_quad_clean.evt
Size (bytes)6,575,04010,419,840
Size6.3 MB 9.9 MB
Events in quadrant A37,51667,303
Events in quadrant B36,48264,570
Events in quadrant C35,64264,792
Events in quadrant D30,95259,308

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A035650
B044880
C037080
D032810

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A736293.940217%
B736486.521739%
C736334.483696%
D736445.978261%

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 735 735 0 0 0.00% 0.00%
B 735 735 0 0 0.00% 0.00%
C 735 735 0 0 0.00% 0.00%
D 735 734 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 40 7.99 9 9 3.9
A 14 172 33 6.18 9 9 3.9
A 7 94 33 6.18 9 9 3.9
B 8 17 30 5.93 9 9 3.5
B 10 15 29 5.65 9 9 3.5
B 2 9 29 5.65 9 9 3.5
C 12 241 35 6.73 9 9 3.9
C 7 140 31 5.7 9 9 3.9
C -1 -1 -1 -1.0 9 9 3.9
D 1 19 31 6.6 8 8 3.5
D 3 30 27 5.45 8 8 3.5
D 10 189 26 5.17 8 8 3.5

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