ASTROSAT CZTI

Data Quality Report

Orbit 42656

Creation date: 2024-06-27T22:42:42.034907
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/AS1A05_013T01_9000005822_42656cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42656cztM0_level2_quad_clean.evt
Size (bytes)229,095,36062,703,360
Size218.5 MB 59.8 MB
Events in quadrant A2,014,660422,422
Events in quadrant B1,989,281425,282
Events in quadrant C1,853,607404,790
Events in quadrant D2,323,883375,717

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A082091
B084621
C078861
D096041

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A382170.183198%
B3821541.413243%
C3821290.758964%
D3821721.884323%

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 5284 3822 3 3 0.06% 0.08%
B 5284 3822 33 33 0.62% 0.86%
C 5284 3822 18 18 0.34% 0.47%
D 5284 3822 55 55 1.04% 1.44%

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 352083 3927.95 428 419 89.5
A 3 137 4892 49.96 428 419 89.5
A 13 6 4300 43.35 428 419 89.5
B 10 246 151374 1785.96 424 411 84.5
B 0 229 102118 1203.24 424 411 84.5
B 15 85 33939 396.65 424 411 84.5
C 15 214 155869 1571.9 418 420 98.9
C 14 254 51940 520.97 418 420 98.9
C 15 111 7550 72.09 418 420 98.9
D 13 249 326698 3200.1 414 402 102.0
D 2 249 178661 1748.25 414 402 102.0
D 12 6 108784 1062.94 414 402 102.0

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