ASTROSAT CZTI

Data Quality Report

Orbit 32882

Creation date: 2024-06-27T20:43:04.306914
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/AS1A11_005T05_9000004744_32882cztM0_level2.evt modeM0/AS1A11_005T05_9000004744_32882cztM0_level2_quad_clean.evt
Size (bytes)1,498,723,200239,973,120
Size1.4 GB 228.9 MB
Events in quadrant A7,395,4381,611,300
Events in quadrant B11,813,8861,513,267
Events in quadrant C7,960,4041,614,147
Events in quadrant D17,135,5481,419,164

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03280
B03280
C03280
D03280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0325655
B0454884
C0340344
D0620444

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16088210.130532%
B16088174610.852810%
C160881330.826703%
D16088203612.655395%

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 21554 16092 5 5 0.02% 0.03%
B 21553 16091 1318 1318 6.12% 8.19%
C 21554 16092 101 101 0.47% 0.63%
D 21554 16092 1866 1866 8.66% 11.60%

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 14 239 97300 255.44 1866 1829 373.8
A 9 143 39669 101.24 1866 1829 373.8
A 14 63 31183 78.54 1866 1829 373.8
B 5 172 4411076 13066.18 1761 1716 337.5
B 0 197 184817 542.58 1761 1716 337.5
B 0 199 61608 177.48 1761 1716 337.5
C 0 10 305353 725.02 1823 1842 418.6
C 9 54 146618 345.84 1823 1842 418.6
C 3 233 119481 281.01 1823 1842 418.6
D 14 52 2802711 6523.46 1713 1679 429.4
D 7 80 1607117 3738.98 1713 1679 429.4
D 8 195 1396963 3249.55 1713 1679 429.4

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