ASTROSAT CZTI

Data Quality Report

Orbit 18661

Creation date: 2024-06-27T17:53:04.896755
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/AS1A06_003T01_9000002786_18661cztM0_level2.evt modeM0/AS1A06_003T01_9000002786_18661cztM0_level2_quad_clean.evt
Size (bytes)486,878,40094,979,520
Size464.3 MB 90.6 MB
Events in quadrant A2,983,453618,217
Events in quadrant B3,053,349632,544
Events in quadrant C3,129,827617,527
Events in quadrant D5,153,624571,155

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129342
B0130992
C0132462
D0194932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6256190.303708%
B6256400.639386%
C6256781.246803%
D62564507.193095%

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 7241 6257 0 0 0.00% 0.00%
B 7241 6257 2 2 0.03% 0.03%
C 7241 6257 0 0 0.00% 0.00%
D 7241 6257 408 408 5.63% 6.52%

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 11 29 11786 71.85 767 752 153.6
A 15 192 10698 64.77 767 752 153.6
A 13 254 8133 48.06 767 752 153.6
B 12 111 17764 116.33 769 752 146.2
B 11 111 15450 100.51 769 752 146.2
B 14 111 13745 88.85 769 752 146.2
C 14 238 116364 661.6 752 757 174.7
C 9 221 46876 263.93 752 757 174.7
C 3 233 35510 198.88 752 757 174.7
D 7 238 1221465 6831.43 738 716 178.7
D 13 168 574509 3211.0 738 716 178.7
D 1 52 532282 2974.7 738 716 178.7

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