ASTROSAT CZTI

Data Quality Report

Orbit 39476

Creation date: 2024-06-27T22:05:04.486739
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/AS1C06_010T05_9000005484_39476cztM0_level2.fits modeM0/AS1C06_010T05_9000005484_39476cztM0_level2_quad_clean.evt
Size (bytes)384,125,76082,140,480
Size366.3 MB 78.3 MB
Events in quadrant A3,200,676566,271
Events in quadrant B2,153,282600,932
Events in quadrant C4,972,315478,230
Events in quadrant D3,515,062501,194

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126063
B098692
C0180652
D0137482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4853911.875129%
B485340.082423%
C485382917.082217%
D48532465.069029%

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 6976 4854 88 88 1.26% 1.81%
B 6976 4854 0 0 0.00% 0.00%
C 6976 4854 754 754 10.81% 15.53%
D 6976 4854 193 193 2.77% 3.98%

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 404867 3832.59 520 510 105.5
A 15 174 396526 3753.54 520 510 105.5
A 15 222 369456 3496.96 520 510 105.5
B 5 172 27312 266.58 530 517 100.5
B 0 199 15764 151.69 530 517 100.5
B 0 230 14282 136.95 530 517 100.5
C 9 187 2117763 19624.84 467 469 107.9
C 15 208 829377 7683.01 467 469 107.9
C 15 214 186902 1728.02 467 469 107.9
D 2 249 517886 4323.81 496 482 119.7
D 12 227 459806 3838.45 496 482 119.7
D 12 0 324318 2706.21 496 482 119.7

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