ASTROSAT CZTI

Data Quality Report

Orbit 41676

Creation date: 2024-06-27T22:31:34.689037
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_110T01_9000005686_41676cztM0_level2.fits modeM0/AS1T05_110T01_9000005686_41676cztM0_level2_quad_clean.evt
Size (bytes)340,620,48096,217,920
Size324.8 MB 91.8 MB
Events in quadrant A3,033,746664,747
Events in quadrant B2,651,101674,745
Events in quadrant C2,975,996623,212
Events in quadrant D3,526,754572,621

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122732
B0113112
C0121213
D0141002

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5405150.277521%
B540590.166512%
C54051242.294172%
D54052384.403330%

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 7379 5406 2 2 0.03% 0.04%
B 7379 5406 3 3 0.04% 0.06%
C 7379 5406 112 112 1.52% 2.07%
D 7379 5406 219 219 2.97% 4.05%

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 560721 4347.25 631 618 128.8
A 13 248 23666 178.89 631 618 128.8
A 2 79 7693 54.91 631 618 128.8
B 0 186 74220 626.36 620 604 117.5
B 0 190 43067 361.29 620 604 117.5
B 0 245 39909 334.42 620 604 117.5
C 0 10 350492 2525.27 603 608 138.6
C 15 214 220047 1583.79 603 608 138.6
C 12 249 33227 235.43 603 608 138.6
D 13 249 577272 3926.48 603 585 146.9
D 2 249 455347 3096.33 603 585 146.9
D 12 6 62138 419.09 603 585 146.9

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