ASTROSAT CZTI

Data Quality Report

Orbit 20260327_A14_083T03_9000006562_level2

Creation date: 2026-04-09T21:39:21.615758
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/AS1A14_083T03_9000006562cztM0_level2.fits modeM0/AS1A14_083T03_9000006562cztM0_level2_quad_clean.evt
Size (bytes)4,348,471,6802,091,674,880
Size4.0 GB 1.9 GB
Events in quadrant A26,023,6687,394,415
Events in quadrant B23,281,1807,007,791
Events in quadrant C24,592,2966,711,193
Events in quadrant D21,967,6626,435,473

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06160
B06160
C06160
D06160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105160
B0105160
C0105140
D0105160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014245530
B015405640
C014094570
D013785210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A522607222574.258841%
B5226105544710.609632%
C522603367257.027323%
D522610267355.115669%

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 603667 522303 0 0 0.00% 0.00%
B 603667 520533 0 0 0.00% 0.00%
C 603667 521398 0 0 0.00% 0.00%
D 603668 522156 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 29458 10.09 6825 6285 2296.7
A 9 255 26097 8.63 6825 6285 2296.7
A 14 204 24354 7.87 6825 6285 2296.7
B 3 25 19671 9.7 6168 5836 1426.4
B 9 173 18519 8.89 6168 5836 1426.4
B 3 17 18305 8.74 6168 5836 1426.4
C 15 175 20900 6.61 6571 5955 2259.5
C 2 31 19859 6.15 6571 5955 2259.5
C 15 127 19591 6.04 6571 5955 2259.5
D 6 218 27240 10.29 6261 5560 2107.7
D 15 11 21365 7.5 6261 5560 2107.7
D 8 12 20162 6.93 6261 5560 2107.7

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