ASTROSAT CZTI

Data Quality Report

Orbit 00780

Creation date: 2024-06-27T14:02:51.031980
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_010T01_9000000108_00780cztM0_level2.evt modeM0/AS1P01_010T01_9000000108_00780cztM0_level2_quad_clean.evt
Size (bytes)894,395,52090,469,440
Size853.0 MB 86.3 MB
Events in quadrant A6,621,152595,638
Events in quadrant B7,001,389604,557
Events in quadrant C6,782,712576,167
Events in quadrant D6,300,314562,451

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237460
B0248970
C0242160
D0228140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A573170.122143%
B5731190.331530%
C5730510.890052%
D5731350.610714%

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 6981 5732 141 141 2.02% 2.46%
B 6981 5732 170 170 2.44% 2.97%
C 6980 5731 256 256 3.67% 4.47%
D 6981 5732 149 149 2.13% 2.60%

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 15 171 54321 129.37 1692 1703 406.7
A 8 192 46546 110.25 1692 1703 406.7
A 15 17 14852 32.33 1692 1703 406.7
B 4 232 43748 100.94 1788 1799 415.6
B 5 191 30784 69.74 1788 1799 415.6
B 0 182 30390 68.8 1788 1799 415.6
C 10 17 237296 533.84 1589 1637 441.4
C 10 207 235864 530.6 1589 1637 441.4
C 15 241 60502 133.35 1589 1637 441.4
D 12 188 186035 394.17 1516 1565 468.0
D 6 226 145746 308.08 1516 1565 468.0
D 13 25 131559 277.76 1516 1565 468.0

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