ASTROSAT CZTI

Data Quality Report

Orbit 40476

Creation date: 2024-06-27T22:16:34.418471
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_022T01_9000005540_40476cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40476cztM0_level2_quad_clean.evt
Size (bytes)304,280,64089,832,960
Size290.2 MB 85.7 MB
Events in quadrant A2,927,746621,439
Events in quadrant B2,518,798634,460
Events in quadrant C2,679,027591,175
Events in quadrant D2,737,681514,451

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118743
B0106382
C0110192
D0115502

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5129310.604406%
B5129180.350946%
C5129430.838370%
D51294228.227725%

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 7253 5130 17 17 0.23% 0.33%
B 7253 5130 13 13 0.18% 0.25%
C 7253 5130 37 37 0.51% 0.72%
D 7253 5130 44 44 0.61% 0.86%

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 480915 4081.74 585 574 117.7
A 13 248 106294 898.37 585 574 117.7
A 9 191 70632 595.32 585 574 117.7
B 3 112 91858 833.3 578 563 109.6
B 0 230 73709 667.65 578 563 109.6
B 5 255 52031 469.78 578 563 109.6
C 14 254 226778 1726.13 564 568 131.1
C 15 214 224043 1705.26 564 568 131.1
C 0 10 12814 93.45 564 568 131.1
D 2 250 165376 1246.34 543 530 132.3
D 12 191 144909 1091.6 543 530 132.3
D 13 249 96915 728.73 543 530 132.3

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