ASTROSAT CZTI

Data Quality Report

Orbit 18868

Creation date: 2024-06-27T17:55:52.235156
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/AS1T03_094T01_9000002816_18868cztM0_level2.evt modeM0/AS1T03_094T01_9000002816_18868cztM0_level2_quad_clean.evt
Size (bytes)998,061,120163,512,000
Size951.8 MB 155.9 MB
Events in quadrant A6,429,1961,023,652
Events in quadrant B6,884,7151,036,507
Events in quadrant C6,863,7251,005,555
Events in quadrant D9,154,871973,056

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02700
B02700
C02700
D02700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0276173
B0289663
C0288803
D0360693

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A132231320.998261%
B132242892.185420%
C132232662.011646%
D132235474.136731%

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 14988 13226 21 21 0.14% 0.16%
B 14989 13227 54 54 0.36% 0.41%
C 14988 13226 4 4 0.03% 0.03%
D 14988 13226 293 293 1.95% 2.22%

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 6 16 115719 345.94 1621 1585 329.9
A 15 174 29103 83.41 1621 1585 329.9
A 13 254 17130 47.12 1621 1585 329.9
B 7 220 299372 954.82 1616 1575 311.9
B 0 197 71592 224.49 1616 1575 311.9
B 0 228 56215 175.19 1616 1575 311.9
C 3 233 515368 1420.73 1548 1558 361.7
C 14 238 239841 658.87 1548 1558 361.7
C 5 112 61686 166.26 1548 1558 361.7
D 1 52 962057 2528.26 1556 1510 379.9
D 12 1 958668 2519.34 1556 1510 379.9
D 1 20 431638 1132.14 1556 1510 379.9

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