ASTROSAT CZTI

Data Quality Report

Orbit 32711

Creation date: 2024-06-27T20:41:06.628122
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/AS1A10_123T04_9000004726_32711cztM0_level2.evt modeM0/AS1A10_123T04_9000004726_32711cztM0_level2_quad_clean.evt
Size (bytes)541,071,36088,565,760
Size516.0 MB 84.5 MB
Events in quadrant A4,711,449573,450
Events in quadrant B2,994,124616,113
Events in quadrant C2,817,147605,777
Events in quadrant D5,498,616508,886

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175773
B0124272
C0117662
D0201442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53914688.681135%
B5391611.131515%
C5391330.612131%
D539184315.637173%

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 7183 5392 328 328 4.57% 6.08%
B 7183 5392 24 24 0.33% 0.45%
C 7183 5392 23 23 0.32% 0.43%
D 7183 5392 749 749 10.43% 13.89%

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 15 249 1757090 14357.6 614 604 122.3
A 15 237 514956 4204.34 614 604 122.3
A 14 238 21263 168.87 614 604 122.3
B 4 251 131747 1085.22 642 629 120.8
B 0 219 115058 947.09 642 629 120.8
B 0 183 76361 626.81 642 629 120.8
C 0 10 167242 1160.42 617 622 143.6
C 3 233 163787 1136.36 617 622 143.6
C 6 96 60752 418.77 617 622 143.6
D 7 80 1875832 14000.53 556 542 133.9
D 2 250 421435 3142.3 556 542 133.9
D 8 195 365905 2727.72 556 542 133.9

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