ASTROSAT CZTI

Data Quality Report

Orbit 51232

Creation date: 2025-03-19T04:03:51.345700
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/AS1C07_001T01_9000006454_51232cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51232cztM0_level2_quad_clean.evt
Size (bytes)504,964,80096,050,880
Size481.6 MB 91.6 MB
Events in quadrant A5,413,609611,955
Events in quadrant B4,497,300674,268
Events in quadrant C4,518,874595,661
Events in quadrant D3,757,378572,751

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206192
B0179462
C0180872
D0160972

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65062744.211497%
B65073365.163670%
C65074536.961734%
D65071832.812356%

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 8731 6507 144 144 1.65% 2.21%
B 8732 6508 194 194 2.22% 2.98%
C 8732 6508 342 342 3.92% 5.26%
D 8732 6508 151 151 1.73% 2.32%

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 3 1055348 6228.73 678 661 169.3
A 9 160 682238 4025.23 678 661 169.3
A 8 249 213985 1259.84 678 661 169.3
B 5 185 582566 4043.66 683 658 143.9
B 8 128 445899 3093.96 683 658 143.9
B 7 252 241368 1672.68 683 658 143.9
C 4 12 1066962 5805.71 662 657 183.7
C 12 247 212561 1153.75 662 657 183.7
C 13 3 143439 777.4 662 657 183.7
D 3 12 416432 2231.99 665 642 186.3
D 10 172 154846 827.78 665 642 186.3
D 2 216 100700 537.12 665 642 186.3

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