ASTROSAT CZTI

Data Quality Report

Orbit 48341

Creation date: 2024-09-05T11:12:15.288492
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_037T05_9000006424_48341cztM0_level2.fits modeM0/AS1A13_037T05_9000006424_48341cztM0_level2_quad_clean.evt
Size (bytes)457,228,800105,209,280
Size436.0 MB 100.3 MB
Events in quadrant A6,921,073691,140
Events in quadrant B3,168,370726,706
Events in quadrant C2,969,444683,352
Events in quadrant D3,353,120622,965

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257131
B0140141
C0136991
D0148601

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66101892.859304%
B6611741.119347%
C6611450.680684%
D6611811.225231%

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 7600 6610 38 38 0.50% 0.57%
B 7601 6611 16 16 0.21% 0.24%
C 7601 6612 14 14 0.18% 0.21%
D 7601 6611 56 56 0.74% 0.85%

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 4058789 26792.43 717 701 151.5
A 13 248 51865 337.8 717 701 151.5
A 0 31 19501 124.12 717 701 151.5
B 4 21 142771 992.41 723 701 143.2
B 0 200 74285 514.01 723 701 143.2
B 5 255 43392 298.21 723 701 143.2
C 15 208 101496 600.33 715 718 167.9
C 12 2 34207 199.49 715 718 167.9
C 12 249 27469 159.35 715 718 167.9
D 2 249 430905 2424.26 707 684 177.5
D 13 171 57634 320.91 707 684 177.5
D 13 29 55918 311.24 707 684 177.5

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