ASTROSAT CZTI

Data Quality Report

Orbit 41147

Creation date: 2024-06-27T22:25:02.237864
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_052T04_9000005602_41147cztM0_level2.fits modeM0/AS1A12_052T04_9000005602_41147cztM0_level2_quad_clean.evt
Size (bytes)450,282,240102,090,240
Size429.4 MB 97.4 MB
Events in quadrant A3,262,567696,875
Events in quadrant B5,269,762668,069
Events in quadrant C3,854,900661,455
Events in quadrant D3,788,319621,911

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135323
B0200922
C0155042
D0158772

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A633990.141978%
B63395067.982332%
C6339961.514434%
D63391001.577536%

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 8964 6341 3 3 0.03% 0.05%
B 8964 6341 405 405 4.52% 6.39%
C 8964 6341 91 91 1.02% 1.44%
D 8964 6341 90 90 1.00% 1.42%

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 564602 3992.33 688 674 141.3
A 13 248 13953 94.01 688 674 141.3
A 9 191 10261 67.87 688 674 141.3
B 0 245 2236367 17281.94 665 647 129.4
B 7 202 392735 3030.81 665 647 129.4
B 5 255 19359 144.64 665 647 129.4
C 9 54 596491 3835.68 665 668 155.3
C 15 214 269570 1731.09 665 668 155.3
C 14 254 250847 1610.56 665 668 155.3
D 13 249 564560 3461.53 668 650 162.9
D 2 16 443444 2718.07 668 650 162.9
D 2 249 117305 716.08 668 650 162.9

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