ASTROSAT CZTI

Data Quality Report

Orbit 41069

Creation date: 2024-06-27T22:24:02.629857
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_093T02_9000005594_41069cztM0_level2.fits modeM0/AS1A12_093T02_9000005594_41069cztM0_level2_quad_clean.evt
Size (bytes)331,585,92098,187,840
Size316.2 MB 93.6 MB
Events in quadrant A3,063,357679,446
Events in quadrant B2,799,046691,600
Events in quadrant C2,794,838642,773
Events in quadrant D3,208,088591,763

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123173
B0113122
C0112162
D0129602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5250150.285714%
B5250100.190476%
C5250480.914286%
D52501302.476190%

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 7343 5251 1 1 0.01% 0.02%
B 7343 5251 2 2 0.03% 0.04%
C 7343 5251 38 38 0.52% 0.72%
D 7343 5251 113 113 1.54% 2.15%

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 488619 3760.21 644 631 129.8
A 13 248 38095 288.68 644 631 129.8
A 12 189 21485 160.69 644 631 129.8
B 0 229 248742 2050.97 631 614 121.0
B 15 32 37864 307.9 631 614 121.0
B 0 190 35454 287.98 631 614 121.0
C 15 214 225317 1558.99 622 626 144.1
C 0 10 128676 888.46 622 626 144.1
C 14 254 16173 107.87 622 626 144.1
D 13 249 411387 2726.61 624 608 150.7
D 2 16 179358 1186.48 624 608 150.7
D 2 249 126664 836.72 624 608 150.7

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