ASTROSAT CZTI

Data Quality Report

Orbit 01285

Creation date: 2024-06-27T14:10:23.895554
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/AS1G04_003T02_9000000228_01285cztM0_level2.evt modeM0/AS1G04_003T02_9000000228_01285cztM0_level2_quad_clean.evt
Size (bytes)1,210,106,88090,541,440
Size1.1 GB 86.3 MB
Events in quadrant A6,897,667606,850
Events in quadrant B7,578,417608,435
Events in quadrant C7,320,304602,058
Events in quadrant D14,450,086498,379

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248452
B0268131
C0260481
D0474391

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A609210.016415%
B6092130.213395%
C6092100.164150%
D6092181929.858831%

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 7212 6093 91 91 1.26% 1.49%
B 7212 6092 204 204 2.83% 3.35%
C 7212 6092 149 149 2.07% 2.45%
D 7212 6092 4113 4113 57.03% 67.51%

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 12 243 25895 56.15 1789 1799 429.2
A 11 79 6818 11.7 1789 1799 429.2
A 13 9 6008 9.81 1789 1799 429.2
B 8 4 129997 289.39 1897 1901 442.6
B 6 53 129408 288.06 1897 1901 442.6
B 12 52 42999 92.85 1897 1901 442.6
C 15 241 304067 629.18 1736 1799 480.4
C 8 208 181632 374.33 1736 1799 480.4
C 3 79 24669 47.6 1736 1799 480.4
D 13 169 5661430 12441.03 1486 1541 454.9
D 10 84 2588680 5686.8 1486 1541 454.9
D 12 22 205668 448.69 1486 1541 454.9

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