ASTROSAT CZTI

Data Quality Report

Orbit 40025

Creation date: 2024-06-27T22:11:24.690228
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/AS1A12_054T03_9000005516_40025cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_40025cztM0_level2_quad_clean.evt
Size (bytes)327,441,60094,656,960
Size312.3 MB 90.3 MB
Events in quadrant A3,283,812638,604
Events in quadrant B3,094,928651,844
Events in quadrant C2,631,657635,474
Events in quadrant D2,700,755572,349

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131923
B0125712
C0109722
D0117132

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5259711.350067%
B52592184.145275%
C5259230.437346%
D5259300.570451%

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 9144 5261 44 44 0.48% 0.84%
B 9144 5261 166 166 1.82% 3.16%
C 9144 5261 16 16 0.17% 0.30%
D 9144 5261 28 28 0.31% 0.53%

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 10 83 439169 3620.22 595 584 121.1
A 12 189 293560 2418.32 595 584 121.1
A 13 248 119670 982.97 595 584 121.1
B 4 171 742370 6553.12 594 580 113.2
B 12 111 13594 114.97 594 580 113.2
B 11 111 12807 108.02 594 580 113.2
C 15 214 218690 1614.15 587 591 135.1
C 14 254 92230 678.22 587 591 135.1
C 0 10 23104 166.62 587 591 135.1
D 2 31 120900 849.36 575 558 141.7
D 12 227 118219 830.44 575 558 141.7
D 13 249 116902 821.14 575 558 141.7

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