ASTROSAT CZTI

Data Quality Report

Orbit 42377

Creation date: 2024-06-27T22:39:35.249108
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/AS1C06_010T01_9000005800_42377cztM0_level2.fits modeM0/AS1C06_010T01_9000005800_42377cztM0_level2_quad_clean.evt
Size (bytes)329,054,40090,365,760
Size313.8 MB 86.2 MB
Events in quadrant A2,923,059603,236
Events in quadrant B2,570,153608,381
Events in quadrant C3,039,203588,696
Events in quadrant D3,214,981547,082

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121782
B0117212
C0127422
D0136442

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5558100.179921%
B5558250.449802%
C55581081.943145%
D55581312.356963%

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 7022 5559 6 6 0.09% 0.11%
B 7022 5559 12 12 0.17% 0.22%
C 7022 5559 73 73 1.04% 1.31%
D 7022 5559 104 104 1.48% 1.87%

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 614290 5065.08 585 572 121.2
A 7 3 20656 165.76 585 572 121.2
A 13 6 14722 116.78 585 572 121.2
B 5 172 81799 732.05 581 564 111.0
B 5 255 50540 450.36 581 564 111.0
B 4 81 32764 290.17 581 564 111.0
C 14 254 460780 3463.04 570 573 132.9
C 15 214 228769 1717.17 570 573 132.9
C 12 249 51203 380.99 570 573 132.9
D 1 52 244321 1757.56 570 553 138.7
D 5 32 138646 995.65 570 553 138.7
D 1 47 105704 758.14 570 553 138.7

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