ASTROSAT CZTI

Data Quality Report

Orbit 39969

Creation date: 2024-06-27T22:10:43.927787
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_054T03_9000005516_39969cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_39969cztM0_level2_quad_clean.evt
Size (bytes)327,453,12089,161,920
Size312.3 MB 85.0 MB
Events in quadrant A2,975,854603,849
Events in quadrant B2,817,256625,827
Events in quadrant C2,559,774595,090
Events in quadrant D3,372,501519,289

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119383
B0117232
C0106072
D0136622

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5081671.318638%
B5081671.318638%
C5081110.216493%
D50812805.510726%

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 7204 5082 58 58 0.81% 1.14%
B 7204 5082 54 54 0.75% 1.06%
C 7204 5082 9 9 0.12% 0.18%
D 7204 5082 289 289 4.01% 5.69%

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 450419 3860.53 578 567 116.5
A 15 223 137428 1174.51 578 567 116.5
A 13 248 128604 1098.79 578 567 116.5
B 4 171 241609 2199.74 574 558 109.6
B 4 200 129443 1176.16 574 558 109.6
B 5 255 122557 1113.32 574 558 109.6
C 15 214 213719 1627.26 564 568 131.0
C 9 54 92969 705.42 564 568 131.0
C 0 10 39791 299.44 564 568 131.0
D 5 32 505422 3817.06 547 533 132.3
D 12 227 451756 3411.34 547 533 132.3
D 1 47 167227 1260.24 547 533 132.3

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