ASTROSAT CZTI

Data Quality Report

Orbit 48287

Creation date: 2024-09-06T10:25:55.360682
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/AS1A13_029T01_9000006422_48287cztM0_level2.fits modeM0/AS1A13_029T01_9000006422_48287cztM0_level2_quad_clean.evt
Size (bytes)486,020,160105,730,560
Size463.5 MB 100.8 MB
Events in quadrant A6,627,245704,311
Events in quadrant B4,081,966730,291
Events in quadrant C2,926,576704,974
Events in quadrant D3,877,237631,694

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246761
B0161721
C0128291
D0156071

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61632964.802856%
B61642223.601557%
C6164731.184296%
D61642423.926022%

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 7318 6164 45 45 0.61% 0.73%
B 7319 6165 43 43 0.59% 0.70%
C 7319 6165 3 3 0.04% 0.05%
D 7319 6165 114 114 1.56% 1.85%

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 3654881 23867.74 735 720 153.1
A 0 31 69183 447.18 735 720 153.1
A 13 248 48968 315.14 735 720 153.1
B 0 200 537341 3720.3 732 709 144.2
B 4 21 418959 2899.6 732 709 144.2
B 7 221 61880 424.08 732 709 144.2
C 0 207 39877 229.43 724 728 170.6
C 14 254 26517 151.14 724 728 170.6
C 12 2 22271 126.25 724 728 170.6
D 2 165 520787 2871.85 723 701 181.1
D 12 2 308377 1698.95 723 701 181.1
D 2 249 71707 392.09 723 701 181.1

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