ASTROSAT CZTI

Data Quality Report

Orbit 36988

Creation date: 2024-06-27T21:33:55.533242
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/AS1A11_079T01_9000005254_36988cztM0_level2.evt modeM0/AS1A11_079T01_9000005254_36988cztM0_level2_quad_clean.evt
Size (bytes)407,073,60062,406,720
Size388.2 MB 59.5 MB
Events in quadrant A2,715,022385,737
Events in quadrant B2,751,730389,281
Events in quadrant C2,764,288388,615
Events in quadrant D3,736,129353,987

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112663
B0117102
C0114992
D0148612

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5309120.226031%
B5309591.111320%
C5309420.791109%
D53094368.212469%

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 7101 5310 2 2 0.03% 0.04%
B 7101 5310 35 35 0.49% 0.66%
C 7101 5310 34 34 0.48% 0.64%
D 7101 5310 423 423 5.96% 7.97%

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 214192 1761.17 597 586 121.3
A 15 222 151520 1244.44 597 586 121.3
A 9 143 23591 189.67 597 586 121.3
B 5 184 205566 1777.58 593 576 115.3
B 4 81 53239 456.67 593 576 115.3
B 0 221 38591 329.65 593 576 115.3
C 15 214 226530 1658.35 585 590 136.2
C 0 10 147218 1076.22 585 590 136.2
C 14 254 49316 357.64 585 590 136.2
D 12 6 1170904 8419.47 564 549 139.0
D 12 17 228812 1642.11 564 549 139.0
D 10 118 83578 597.3 564 549 139.0

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