ASTROSAT CZTI

Data Quality Report

Orbit 00412

Creation date: 2024-06-27T13:59:29.593110
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/AS1P01_161T03_9000000070_00412cztM0_level2.evt modeM0/AS1P01_161T03_9000000070_00412cztM0_level2_quad_clean.evt
Size (bytes)831,712,32040,818,240
Size793.2 MB 38.9 MB
Events in quadrant A6,537,487219,160
Events in quadrant B6,417,262209,401
Events in quadrant C5,994,435217,326
Events in quadrant D5,874,749206,122

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232753
B0229512
C0216902
D0213952

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A547430.054805%
B547470.127877%
C547430.054805%
D5474150.274023%

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 7539 5475 133 133 1.76% 2.43%
B 7539 5475 81 81 1.07% 1.48%
C 7539 5475 36 36 0.48% 0.66%
D 7539 5475 85 85 1.13% 1.55%

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 12 133 120597 328.96 1623 1610 361.7
A 0 238 48675 130.12 1623 1610 361.7
A 12 243 46977 125.42 1623 1610 361.7
B 15 82 19675 46.66 1651 1661 386.1
B 0 220 19429 46.02 1651 1661 386.1
B 0 207 14817 34.08 1651 1661 386.1
C 3 159 33722 76.59 1505 1566 419.9
C 9 206 20266 44.54 1505 1566 419.9
C 1 1 16185 34.82 1505 1566 419.9
D 13 7 90554 197.02 1424 1481 452.1
D 13 221 90422 196.73 1424 1481 452.1
D 1 5 77425 167.98 1424 1481 452.1

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