ASTROSAT CZTI

Data Quality Report

Orbit 50503

Creation date: 2025-01-29T03:23:36.194289
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/AS1T05_239T01_9000006444_50503cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50503cztM0_level2_quad_clean.evt
Size (bytes)669,332,16089,236,800
Size638.3 MB 85.1 MB
Events in quadrant A5,718,451568,935
Events in quadrant B3,240,209665,683
Events in quadrant C7,907,423497,304
Events in quadrant D7,403,498512,750

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213901
B0142201
C0280471
D0266151

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A655665610.006101%
B6556650.991458%
C6556123618.852959%
D655669210.555217%

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 7486 6557 596 596 7.96% 9.09%
B 7486 6556 33 33 0.44% 0.50%
C 7485 6556 1157 1157 15.46% 17.65%
D 7486 6557 714 714 9.54% 10.89%

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 10 253 1487297 8850.91 675 658 168.0
A 12 250 718501 4273.78 675 658 168.0
A 4 3 159508 945.74 675 658 168.0
B 8 128 90567 605.35 694 671 148.5
B 7 0 55619 370.01 694 671 148.5
B 7 252 44329 293.99 694 671 148.5
C 15 235 1155755 6564.08 642 639 176.0
C 15 213 949576 5392.44 642 639 176.0
C 12 247 655796 3723.0 642 639 176.0
D 7 61 1303939 7161.12 654 633 182.0
D 8 48 948972 5210.73 654 633 182.0
D 6 42 538644 2956.15 654 633 182.0

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