ASTROSAT CZTI

Data Quality Report

Orbit 40869

Creation date: 2024-06-27T22:21:34.074294
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_40869cztM0_level2.fits modeM0/AS1A12_097T01_9000005574_40869cztM0_level2_quad_clean.evt
Size (bytes)470,822,40086,094,720
Size449.0 MB 82.1 MB
Events in quadrant A3,273,679595,094
Events in quadrant B4,213,132575,076
Events in quadrant C2,799,455591,109
Events in quadrant D6,715,279460,531

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130263
B0162572
C0117422
D0237182

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5493631.146914%
B549357310.431458%
C5493250.455125%
D5493106219.333697%

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 9468 5495 39 39 0.41% 0.71%
B 9468 5495 339 339 3.58% 6.17%
C 9468 5495 22 22 0.23% 0.40%
D 9468 5495 1010 1010 10.67% 18.38%

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 530989 4228.26 605 594 125.4
A 13 248 336871 2680.77 605 594 125.4
A 2 79 48553 382.32 605 594 125.4
B 4 171 1722991 15236.52 582 565 113.0
B 0 229 125039 1101.09 582 565 113.0
B 5 255 24119 208.36 582 565 113.0
C 15 214 234900 1667.99 594 597 140.5
C 14 254 106457 753.61 594 597 140.5
C 0 10 83811 592.4 594 597 140.5
D 12 79 1801039 13097.59 552 536 137.5
D 1 47 1692861 12310.66 552 536 137.5
D 2 249 478816 3479.2 552 536 137.5

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