ASTROSAT CZTI

Data Quality Report

Orbit 51640

Creation date: 2025-04-15T16:44:07.948676
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/AS1A13_037T05_9000006460_51640cztM0_level2.fits modeM0/AS1A13_037T05_9000006460_51640cztM0_level2_quad_clean.evt
Size (bytes)454,821,12097,646,400
Size433.8 MB 93.1 MB
Events in quadrant A3,864,405637,947
Events in quadrant B4,404,235685,074
Events in quadrant C4,377,746610,038
Events in quadrant D3,696,567581,320

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157002
B0172611
C0172701
D0151081

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63442664.192938%
B63443285.170240%
C63443134.933796%
D63451672.631994%

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 7449 6345 147 147 1.97% 2.32%
B 7449 6345 141 141 1.89% 2.22%
C 7449 6345 185 185 2.48% 2.92%
D 7450 6346 74 74 0.99% 1.17%

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 12 250 709928 3967.16 726 707 178.8
A 13 248 64123 354.73 726 707 178.8
A 3 79 39487 216.92 726 707 178.8
B 10 44 609065 4025.91 713 689 151.1
B 10 41 150042 988.34 713 689 151.1
B 10 254 115661 760.82 713 689 151.1
C 3 242 447552 2337.24 702 698 191.2
C 10 19 304936 1591.3 702 698 191.2
C 9 237 186580 972.24 702 698 191.2
D 8 176 359518 1821.18 708 683 197.0
D 6 222 121876 615.08 708 683 197.0
D 1 3 113211 571.11 708 683 197.0

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