ASTROSAT CZTI

Data Quality Report

Orbit 41316

Creation date: 2024-06-27T22:27:26.181777
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_025T14_9000005646_41316cztM0_level2.fits modeM0/AS1A12_025T14_9000005646_41316cztM0_level2_quad_clean.evt
Size (bytes)344,027,52089,248,320
Size328.1 MB 85.1 MB
Events in quadrant A2,855,140614,082
Events in quadrant B2,967,856638,763
Events in quadrant C3,288,742560,024
Events in quadrant D3,221,560528,702

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113433
B0123732
C0125732
D0129902

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A515790.174520%
B5157100.193911%
C51572895.604033%
D51571783.451619%

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 7280 5158 4 4 0.05% 0.08%
B 7280 5158 0 0 0.00% 0.00%
C 7280 5158 282 282 3.87% 5.47%
D 7280 5158 171 171 2.35% 3.32%

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 495024 3981.57 606 593 124.2
A 13 6 9703 73.36 606 593 124.2
A 12 189 9215 69.43 606 593 124.2
B 0 229 532031 4520.03 603 586 117.6
B 5 255 37313 312.37 603 586 117.6
B 7 202 15088 123.34 603 586 117.6
C 0 10 880028 6608.3 562 565 133.1
C 15 214 213597 1600.73 562 565 133.1
C 15 143 4175 27.13 562 565 133.1
D 13 249 412423 2919.82 572 556 141.1
D 2 120 261202 1847.78 572 556 141.1
D 1 47 136121 961.05 572 556 141.1

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