ASTROSAT CZTI

Data Quality Report

Orbit 45256

Creation date: 2024-06-27T23:11:32.936132
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/AS1A13_023T05_9000006062_45256cztM0_level2.fits modeM0/AS1A13_023T05_9000006062_45256cztM0_level2_quad_clean.evt
Size (bytes)455,405,760114,500,160
Size434.3 MB 109.2 MB
Events in quadrant A5,797,259749,261
Events in quadrant B3,089,943813,864
Events in quadrant C3,636,303764,349
Events in quadrant D3,839,474695,796

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220582
B0132182
C0148572
D0155482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63693014.726017%
B6369560.879259%
C63691602.512168%
D63691071.680013%

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 7599 6369 183 183 2.41% 2.87%
B 7599 6370 2 2 0.03% 0.03%
C 7599 6369 122 122 1.61% 1.92%
D 7599 6370 84 84 1.11% 1.32%

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 2288631 14790.89 751 738 154.7
A 13 248 599176 3868.81 751 738 154.7
A 3 137 8189 48.17 751 738 154.7
B 5 172 28917 188.69 770 747 149.3
B 12 111 19246 123.91 770 747 149.3
B 0 246 18576 119.42 770 747 149.3
C 1 3 536433 2996.73 761 769 178.7
C 14 254 94693 525.45 761 769 178.7
C 3 233 18251 97.8 761 769 178.7
D 11 241 473476 2541.71 751 731 186.0
D 2 249 184881 990.08 751 731 186.0
D 13 249 152387 815.38 751 731 186.0

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