ASTROSAT CZTI

Data Quality Report

Orbit 40868

Creation date: 2024-06-27T22:21:33.169069
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_097T01_9000005574_40868cztM0_level2.fits modeM0/AS1A12_097T01_9000005574_40868cztM0_level2_quad_clean.evt
Size (bytes)362,900,16081,541,440
Size346.1 MB 77.8 MB
Events in quadrant A2,815,761553,139
Events in quadrant B3,470,715561,172
Events in quadrant C2,480,274546,979
Events in quadrant D4,285,273463,844

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113003
B0135812
C0103532
D0160912

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4902230.469196%
B49022505.099959%
C4902320.652795%
D49023968.078335%

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 6994 4903 13 13 0.19% 0.27%
B 6994 4903 153 153 2.19% 3.12%
C 6994 4903 34 34 0.49% 0.69%
D 6994 4903 332 332 4.75% 6.77%

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 468247 4101.73 549 538 114.0
A 13 248 164414 1437.16 549 538 114.0
A 12 189 51620 447.98 549 538 114.0
B 4 171 1216616 11442.5 544 529 106.3
B 0 229 53836 501.58 544 529 106.3
B 5 255 50935 474.28 544 529 106.3
C 15 214 208018 1637.15 536 540 126.7
C 0 10 142680 1121.59 536 540 126.7
C 10 70 15300 116.47 536 540 126.7
D 12 79 835761 6534.61 512 497 127.8
D 2 249 590751 4617.8 512 497 127.8
D 12 233 560700 4382.7 512 497 127.8

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