ASTROSAT CZTI

Data Quality Report

Orbit 39273

Creation date: 2024-06-27T22:02:34.243605
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_037T01_9000005456_39273cztM0_level2.fits modeM0/AS1A12_037T01_9000005456_39273cztM0_level2_quad_clean.evt
Size (bytes)544,317,12082,045,440
Size519.1 MB 78.2 MB
Events in quadrant A5,636,339556,476
Events in quadrant B2,624,944656,899
Events in quadrant C2,555,177622,515
Events in quadrant D8,947,670301,526

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200873
B0106821
C0102181
D0300491

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A495379716.091258%
B4953310.625883%
C495330.060569%
D4953261352.755906%

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 7047 4955 689 689 9.78% 13.91%
B 7047 4955 17 17 0.24% 0.34%
C 7047 4955 0 0 0.00% 0.00%
D 7047 4955 2314 2314 32.84% 46.70%

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 15 222 3069862 26451.51 572 561 116.0
A 10 83 345976 2976.82 572 561 116.0
A 12 16 8523 68.62 572 561 116.0
B 0 190 133253 1160.54 599 584 114.3
B 5 172 107445 934.78 599 584 114.3
B 5 255 22393 190.78 599 584 114.3
C 15 214 224949 1624.6 592 597 138.1
C 9 187 15581 108.5 592 597 138.1
C 0 10 5844 37.99 592 597 138.1
D 12 235 6680721 58088.81 472 460 115.0
D 12 227 214718 1863.1 472 460 115.0
D 1 47 70107 605.62 472 460 115.0

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