ASTROSAT CZTI

Data Quality Report

Orbit 20250622_C09_011T07_9000006480_level2

Creation date: 2025-07-28T18:32:59.641430
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_011T07_9000006480cztM0_level2.fits modeM0/AS1C09_011T07_9000006480cztM0_level2_quad_clean.evt
Size (bytes)583,194,240311,682,240
Size556.2 MB 297.2 MB
Events in quadrant A2,697,571361,423
Events in quadrant B2,274,662277,166
Events in quadrant C2,482,056391,710
Events in quadrant D2,037,395280,033

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02880
B02880
C02880
D02880

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024000
B024000
C024000
D024000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04278850
B05105130
C04219110
D05272040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1184341621813.693703%
B1184402988425.231341%
C1184352185918.456537%
D1184382964425.029129%

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 1276203 58820 0 0 0.00% 0.00%
B 1276203 55657 0 0 0.00% 0.00%
C 1276203 61254 0 0 0.00% 0.00%
D 1276203 53978 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 3088 10.4 711 662 233.4
A 9 255 2800 9.16 711 662 233.4
A 14 204 2559 8.13 711 662 233.4
B 2 9 2602 14.11 607 577 143.5
B 2 8 2380 12.56 607 577 143.5
B 3 25 1883 9.1 607 577 143.5
C 3 202 2016 6.13 665 607 229.8
C 2 31 2003 6.08 665 607 229.8
C 7 221 1978 5.97 665 607 229.8
D 6 218 2767 11.3 585 519 199.0
D 15 11 2042 7.65 585 519 199.0
D 3 30 1912 7.0 585 519 199.0

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