ASTROSAT CZTI

Data Quality Report

Orbit 40357

Creation date: 2024-06-27T22:15:14.398654
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_056T02_9000005538_40357cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40357cztM0_level2_quad_clean.evt
Size (bytes)465,701,760120,332,160
Size444.1 MB 114.8 MB
Events in quadrant A4,135,321842,645
Events in quadrant B3,564,296848,260
Events in quadrant C3,952,994815,074
Events in quadrant D5,055,920662,275

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162593
B0149652
C0158352
D0195242

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6817450.660114%
B68171281.877659%
C6817901.320229%
D681799314.566525%

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 10491 6819 30 30 0.29% 0.44%
B 10491 6819 91 91 0.87% 1.33%
C 10491 6819 78 78 0.74% 1.14%
D 10491 6819 367 367 3.50% 5.38%

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 575567 3558.66 792 780 161.5
A 13 248 174408 1074.98 792 780 161.5
A 6 10 82698 507.18 792 780 161.5
B 4 170 356202 2403.77 781 762 147.9
B 5 255 69401 464.19 781 762 147.9
B 0 230 31557 208.26 781 762 147.9
C 14 254 645621 3648.55 766 775 176.7
C 15 214 288032 1625.31 766 775 176.7
C 0 10 24286 133.03 766 775 176.7
D 12 227 1518422 8578.7 713 694 176.9
D 12 128 225276 1269.41 713 694 176.9
D 12 191 200446 1129.06 713 694 176.9

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