ASTROSAT CZTI

Data Quality Report

Orbit 39450

Creation date: 2024-06-27T22:04:43.208067
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_025T17_9000005476_39450cztM0_level2.fits modeM0/AS1A12_025T17_9000005476_39450cztM0_level2_quad_clean.evt
Size (bytes)354,211,20090,077,760
Size337.8 MB 85.9 MB
Events in quadrant A4,162,455588,507
Events in quadrant B2,431,260623,959
Events in quadrant C3,387,330590,329
Events in quadrant D2,709,649546,237

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160363
B0109462
C0133782
D0118692

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54071933.569447%
B5407160.295913%
C54071302.404291%
D5407881.627520%

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 7109 5408 139 139 1.96% 2.57%
B 7109 5408 5 5 0.07% 0.09%
C 7109 5408 123 123 1.73% 2.27%
D 7109 5408 78 78 1.10% 1.44%

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 15 222 1300017 10603.93 600 589 122.5
A 10 83 441567 3598.58 600 589 122.5
A 15 174 79071 640.45 600 589 122.5
B 8 3 43642 365.28 602 586 117.9
B 5 255 15863 129.61 602 586 117.9
B 12 111 15051 122.72 602 586 117.9
C 15 208 714195 5213.9 585 591 136.9
C 15 214 226267 1648.89 585 591 136.9
C 9 187 151591 1103.27 585 591 136.9
D 13 249 268976 1861.01 588 571 144.2
D 2 249 80734 555.81 588 571 144.2
D 12 227 55911 383.7 588 571 144.2

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