ASTROSAT CZTI

Data Quality Report

Orbit 40601

Creation date: 2024-06-27T22:18:04.602377
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_054T02_9000005550_40601cztM0_level2.fits modeM0/AS1A12_054T02_9000005550_40601cztM0_level2_quad_clean.evt
Size (bytes)323,133,12087,013,440
Size308.2 MB 83.0 MB
Events in quadrant A2,819,558590,278
Events in quadrant B3,027,760600,426
Events in quadrant C2,590,356580,202
Events in quadrant D3,100,770484,343

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118503
B0125782
C0112122
D0130842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5421150.276702%
B5421711.309721%
C5421260.479616%
D54215129.444752%

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 7123 5422 11 11 0.15% 0.20%
B 7123 5422 40 40 0.56% 0.74%
C 7123 5422 21 21 0.29% 0.39%
D 7123 5422 51 51 0.72% 0.94%

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 484625 4022.16 583 571 120.3
A 3 1 51459 422.84 583 571 120.3
A 9 191 17277 138.82 583 571 120.3
B 0 190 450926 3996.31 581 564 112.7
B 5 255 152825 1351.1 581 564 112.7
B 3 112 99918 881.62 581 564 112.7
C 15 214 237227 1752.6 573 576 135.0
C 0 10 85126 626.16 573 576 135.0
C 9 187 17182 122.98 573 576 135.0
D 12 227 303656 2257.92 537 521 134.3
D 12 191 178108 1322.77 537 521 134.3
D 2 153 116470 863.65 537 521 134.3

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