ASTROSAT CZTI

Data Quality Report

Orbit 20220203_A11_047T01_9000004904_level2

Creation date: 2025-12-31T20:06:25.924829
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/AS1A11_047T01_9000004904cztM0_level2.fits modeM0/AS1A11_047T01_9000004904cztM0_level2_quad_clean.evt
Size (bytes)65,848,32033,802,560
Size62.8 MB 32.2 MB
Events in quadrant A422,172154,623
Events in quadrant B395,336153,239
Events in quadrant C405,480147,561
Events in quadrant D305,796102,010

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138430
B0155450
C0151640
D0278730

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A668290.134690%
B66821402.095181%
C66821151.721042%
D6682128919.290632%

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 10178 6682 0 0 0.00% 0.00%
B 10178 6682 0 0 0.00% 0.00%
C 10178 6675 0 0 0.00% 0.00%
D 10176 6655 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 7 110 351 8.54 110 105 28.8
A 9 19 334 7.95 110 105 28.8
A 15 236 300 6.77 110 105 28.8
B 2 9 309 9.17 104 100 22.8
B 3 80 294 8.51 104 100 22.8
B 2 8 269 7.41 104 100 22.8
C 3 158 296 6.68 107 102 29.0
C 1 65 280 6.13 107 102 29.0
C 3 235 277 6.03 107 102 29.0
D 4 160 247 6.84 87 80 24.4
D 10 189 238 6.47 87 80 24.4
D 1 3 221 5.77 87 80 24.4

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