ASTROSAT CZTI

Data Quality Report

Orbit 20250505_C09_011T06_9000006468_level2

Creation date: 2025-05-19T21:25:05.409163
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/AS1C09_011T06_9000006468cztM0_level2.fits modeM0/AS1C09_011T06_9000006468cztM0_level2_quad_clean.evt
Size (bytes)3,735,915,8402,104,467,840
Size3.5 GB 2.0 GB
Events in quadrant A22,376,5368,173,272
Events in quadrant B20,223,5168,622,994
Events in quadrant C20,610,8426,700,422
Events in quadrant D14,189,1844,736,499

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018016360
B019153050
C022283040
D030887750

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05960
B05960
C05960
D05960

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105140
B0105120
C0105120
D0105140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5179067544714.567701%
B51778710887721.027372%
C51785013331925.744714%
D51777525368248.994641%

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 772141 515447 0 0 0.00% 0.00%
B 772141 502904 0 0 0.00% 0.00%
C 772139 512881 0 0 0.00% 0.00%
D 772140 491499 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 14 188 25098 10.27 5960 5566 1902.5
A 9 255 23939 9.66 5960 5566 1902.5
A 14 204 20591 7.9 5960 5566 1902.5
B 2 9 23791 14.93 5404 5136 1249.1
B 2 8 21577 13.16 5404 5136 1249.1
B 9 173 16784 9.32 5404 5136 1249.1
C 2 31 17097 6.38 5586 5115 1878.2
C 7 221 16385 6.0 5586 5115 1878.2
C 3 202 16187 5.89 5586 5115 1878.2
D 6 218 18994 11.13 4095 3628 1380.9
D 3 30 14167 7.63 4095 3628 1380.9
D 15 11 14065 7.56 4095 3628 1380.9

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