ASTROSAT CZTI

Data Quality Report

Orbit 41610

Creation date: 2024-06-27T22:30:42.337224
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_035T02_9000005680_41610cztM0_level2.fits modeM0/AS1A12_035T02_9000005680_41610cztM0_level2_quad_clean.evt
Size (bytes)420,131,52094,674,240
Size400.7 MB 90.3 MB
Events in quadrant A3,140,156652,014
Events in quadrant B2,778,770661,467
Events in quadrant C3,290,951621,706
Events in quadrant D5,880,661516,762

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128522
B0124952
C0134082
D0215502

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5930120.202361%
B593080.134907%
C59301562.630691%
D593096216.222597%

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 8704 5932 4 4 0.05% 0.07%
B 8704 5932 0 0 0.00% 0.00%
C 8704 5932 150 150 1.72% 2.53%
D 8704 5932 796 796 9.15% 13.42%

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 578913 4221.78 654 639 137.0
A 2 79 14502 101.21 654 639 137.0
A 10 255 10538 72.27 654 639 137.0
B 0 186 151717 1199.39 648 630 126.0
B 0 189 34112 265.79 648 630 126.0
B 12 111 16176 123.41 648 630 126.0
C 0 10 445089 2987.94 633 635 148.7
C 15 214 259782 1742.17 633 635 148.7
C 14 254 99486 664.55 633 635 148.7
D 13 249 2314559 15458.21 608 591 149.7
D 12 79 622392 4153.87 608 591 149.7
D 2 249 484508 3232.76 608 591 149.7

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