ASTROSAT CZTI

Data Quality Report

Orbit 54472

Creation date: 2025-10-23T08:31:51.343464
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_126T19_9000006518_54472cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54472cztM0_level2_quad_clean.evt
Size (bytes)599,158,08090,394,560
Size571.4 MB 86.2 MB
Events in quadrant A3,111,337653,896
Events in quadrant B4,196,129681,737
Events in quadrant C4,014,424612,417
Events in quadrant D10,338,750324,708

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142046
B0170835
C0166894
D03535225

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6665360.540135%
B66683184.769046%
C66682844.259148%
D6664304345.663265%

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 8968 6669 22 22 0.25% 0.33%
B 8969 6671 209 209 2.33% 3.13%
C 8969 6671 217 217 2.42% 3.25%
D 8967 6666 2652 2652 29.58% 39.78%

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 4 249 137323 777.67 710 692 175.7
A 11 31 52786 296.51 710 692 175.7
A 4 3 47334 265.48 710 692 175.7
B 5 172 944561 6251.78 700 675 151.0
B 0 213 233234 1540.34 700 675 151.0
B 5 185 139978 922.67 700 675 151.0
C 4 5 409697 2174.72 684 678 188.1
C 12 2 346104 1836.61 684 678 188.1
C 13 3 134899 713.64 684 678 188.1
D 8 176 5537704 42999.46 451 431 128.8
D 2 172 2682463 20827.21 451 431 128.8
D 2 252 82831 639.87 451 431 128.8

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