ASTROSAT CZTI

Data Quality Report

Orbit 39460

Creation date: 2024-06-27T22:04:48.581596
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_044T16_9000005478_39460cztM0_level2.fits modeM0/AS1A12_044T16_9000005478_39460cztM0_level2_quad_clean.evt
Size (bytes)482,365,44084,101,760
Size460.0 MB 80.2 MB
Events in quadrant A8,210,893461,617
Events in quadrant B2,347,931635,470
Events in quadrant C3,617,115563,811
Events in quadrant D3,288,183532,175

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0279173
B0101922
C0137132
D0133342

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5038164632.671695%
B503880.158793%
C50383136.212783%
D50381723.414053%

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 7041 5039 1687 1687 23.96% 33.48%
B 7041 5039 1 1 0.01% 0.02%
C 7041 5039 300 300 4.26% 5.95%
D 7041 5039 141 141 2.00% 2.80%

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 5301140 48727.11 539 529 108.8
A 10 83 399873 3671.06 539 529 108.8
A 6 10 232462 2132.1 539 529 108.8
B 5 172 28866 252.28 586 572 112.2
B 12 111 13941 119.2 586 572 112.2
B 11 111 12838 109.37 586 572 112.2
C 15 208 1210758 9386.11 555 559 128.9
C 15 214 204546 1582.09 555 559 128.9
C 9 187 22099 167.06 555 559 128.9
D 1 47 435758 3168.12 556 541 137.4
D 1 52 301577 2191.36 556 541 137.4
D 12 227 138309 1002.87 556 541 137.4

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