ASTROSAT CZTI

Data Quality Report

Orbit 39721

Creation date: 2024-06-27T22:08:12.117824
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_022T01_9000005494_39721cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39721cztM0_level2_quad_clean.evt
Size (bytes)373,337,280102,196,800
Size356.0 MB 97.5 MB
Events in quadrant A3,501,765708,905
Events in quadrant B2,906,572715,802
Events in quadrant C3,261,201675,118
Events in quadrant D3,734,505620,576

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138453
B0119132
C0130962
D0145652

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5346921.720913%
B53461021.907969%
C5346430.804340%
D53461693.161242%

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 7380 5347 60 60 0.81% 1.12%
B 7380 5347 66 66 0.89% 1.23%
C 7380 5347 36 36 0.49% 0.67%
D 7380 5347 148 148 2.01% 2.77%

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 459481 3453.11 658 647 132.9
A 15 174 293091 2200.89 658 647 132.9
A 13 248 100295 749.93 658 647 132.9
B 5 172 280044 2292.38 646 630 121.9
B 4 170 34903 281.18 646 630 121.9
B 5 255 30499 245.05 646 630 121.9
C 9 187 256788 1758.62 636 640 145.7
C 15 214 221032 1513.13 636 640 145.7
C 15 208 183291 1254.01 636 640 145.7
D 12 227 569647 3700.28 636 618 153.8
D 12 233 327697 2126.93 636 618 153.8
D 2 250 195889 1269.81 636 618 153.8

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