ASTROSAT CZTI

Data Quality Report

Orbit 40681

Creation date: 2024-06-27T22:19:06.092185
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_029T02_9000005558_40681cztM0_level2.fits modeM0/AS1A12_029T02_9000005558_40681cztM0_level2_quad_clean.evt
Size (bytes)365,705,28085,576,320
Size348.8 MB 81.6 MB
Events in quadrant A2,875,045585,470
Events in quadrant B3,212,159602,629
Events in quadrant C4,039,858551,932
Events in quadrant D2,991,303474,431

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116003
B0129302
C0152972
D0125512

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5374110.204689%
B5374941.749163%
C53743286.103461%
D537464512.002233%

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 7136 5375 7 7 0.10% 0.13%
B 7136 5375 67 67 0.94% 1.25%
C 7136 5374 342 342 4.79% 6.36%
D 7136 5375 87 87 1.22% 1.62%

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 475427 3875.29 596 583 122.5
A 12 189 71561 579.26 596 583 122.5
A 6 10 14839 116.35 596 583 122.5
B 0 229 291614 2526.08 589 574 115.2
B 4 171 254647 2205.23 589 574 115.2
B 5 255 176593 1527.76 589 574 115.2
C 9 187 1525506 11541.11 567 570 132.1
C 15 214 230500 1740.17 567 570 132.1
C 0 207 28467 211.13 567 570 132.1
D 12 227 214590 1607.65 543 527 133.2
D 12 191 170148 1273.89 543 527 133.2
D 2 250 144988 1084.93 543 527 133.2

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