ASTROSAT CZTI

Data Quality Report

Orbit 40272

Creation date: 2024-06-27T22:14:25.305880
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_40272cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40272cztM0_level2_quad_clean.evt
Size (bytes)324,509,76094,299,840
Size309.5 MB 89.9 MB
Events in quadrant A2,859,908653,913
Events in quadrant B2,530,059672,868
Events in quadrant C2,543,097626,959
Events in quadrant D3,694,113555,137

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114453
B0104592
C0103432
D0142892

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4944260.525890%
B4944160.323625%
C4944130.262945%
D49452515.075834%

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 7037 4945 8 8 0.11% 0.16%
B 7037 4945 2 2 0.03% 0.04%
C 7037 4945 5 5 0.07% 0.10%
D 7038 4946 225 225 3.20% 4.55%

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 456911 3797.14 598 590 120.2
A 13 248 47349 389.09 598 590 120.2
A 12 189 10730 84.38 598 590 120.2
B 0 245 78270 688.81 596 582 112.8
B 5 255 50292 440.74 596 582 112.8
B 0 230 42310 369.97 596 582 112.8
C 15 214 211845 1581.66 578 584 133.6
C 14 254 42944 317.14 578 584 133.6
C 0 10 15455 111.34 578 584 133.6
D 12 227 963762 7149.07 559 544 134.7
D 1 47 159139 1177.1 559 544 134.7
D 13 249 147540 1091.01 559 544 134.7

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