ASTROSAT CZTI

Data Quality Report

Orbit 53513

Creation date: 2025-08-19T18:43:38.437767
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_004T04_9000006500_53513cztM0_level2.fits modeM0/AS1A14_004T04_9000006500_53513cztM0_level2_quad_clean.evt
Size (bytes)343,656,00035,303,040
Size327.7 MB 33.7 MB
Events in quadrant A3,907,833214,406
Events in quadrant B1,827,523295,824
Events in quadrant C5,193,223114,170
Events in quadrant D1,585,081255,073

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134961
B071691
C0172471
D064162

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A265185832.365145%
B26511867.016220%
C2651166062.617880%
D26501074.037736%

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 3806 2652 650 650 17.08% 24.51%
B 3806 2652 55 55 1.45% 2.07%
C 3806 2651 1392 1392 36.57% 52.51%
D 3805 2651 32 32 0.84% 1.21%

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 3 62 1991803 27692.01 288 281 71.9
A 3 63 465065 6462.8 288 281 71.9
A 15 174 300087 4168.79 288 281 71.9
B 4 171 304246 4370.39 318 306 69.5
B 5 185 108139 1550.55 318 306 69.5
B 10 28 60785 869.64 318 306 69.5
C 7 64 2992234 51577.07 208 206 58.0
C 1 241 727486 12536.97 208 206 58.0
C 15 147 203071 3497.02 208 206 58.0
D 3 12 100121 1118.02 316 303 89.3
D 2 153 60073 669.46 316 303 89.3
D 8 176 47449 528.06 316 303 89.3

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