ASTROSAT CZTI

Data Quality Report

Orbit 38451

Creation date: 2024-06-27T21:52:56.335817
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_018T01_9000005386_38451cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38451cztM0_level2_quad_clean.evt
Size (bytes)360,864,00090,097,920
Size344.1 MB 85.9 MB
Events in quadrant A3,048,581613,210
Events in quadrant B3,762,382582,926
Events in quadrant C2,692,559601,008
Events in quadrant D3,431,534550,829

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123693
B0147772
C0113852
D0139382

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5431761.399374%
B54314738.709262%
C5431200.368256%
D54311282.356840%

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 7043 5432 58 58 0.82% 1.07%
B 7043 5432 311 311 4.42% 5.73%
C 7043 5432 12 12 0.17% 0.22%
D 7043 5432 102 102 1.45% 1.88%

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 396360 3228.83 600 585 122.6
A 9 143 245923 2001.53 600 585 122.6
A 15 223 44133 355.27 600 585 122.6
B 5 184 1181091 10520.44 585 569 112.2
B 0 183 88499 783.6 585 569 112.2
B 4 232 75578 668.46 585 569 112.2
C 15 214 228937 1660.42 591 595 137.5
C 3 233 70547 508.67 591 595 137.5
C 0 10 35017 250.3 591 595 137.5
D 12 235 227136 1588.95 587 570 142.6
D 13 249 223155 1561.03 587 570 142.6
D 2 153 200230 1400.25 587 570 142.6

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