ASTROSAT CZTI

Data Quality Report

Orbit 37185

Creation date: 2024-06-27T21:36:38.525640
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_9000005284_37185cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37185cztM0_level2_quad_clean.evt
Size (bytes)391,746,24054,685,440
Size373.6 MB 52.2 MB
Events in quadrant A2,754,352326,743
Events in quadrant B2,832,064328,921
Events in quadrant C2,975,330322,121
Events in quadrant D2,941,841306,616

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112683
B0116142
C0117982
D0121642

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5293170.321179%
B5293611.152466%
C5293891.681466%
D5293370.699036%

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 7116 5294 3 3 0.04% 0.06%
B 7116 5294 20 20 0.28% 0.38%
C 7116 5294 66 66 0.93% 1.25%
D 7116 5294 34 34 0.48% 0.64%

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 258887 1978.09 642 629 130.6
A 9 143 11821 85.72 642 629 130.6
A 13 254 8325 58.95 642 629 130.6
B 5 172 178858 1475.84 632 617 120.8
B 5 184 54626 447.2 632 617 120.8
B 0 190 47700 389.85 632 617 120.8
C 15 214 228291 1587.22 617 624 143.4
C 0 10 145825 1012.3 617 624 143.4
C 14 254 125726 872.17 617 624 143.4
D 10 253 210323 1403.33 615 597 149.4
D 2 249 131577 876.42 615 597 149.4
D 13 171 49840 329.5 615 597 149.4

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