ASTROSAT CZTI

Data Quality Report

Orbit 00933

Creation date: 2024-06-27T14:04:58.508758
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_998T01_9000000188_00933cztM0_level2.evt modeM0/AS1P01_998T01_9000000188_00933cztM0_level2_quad_clean.evt
Size (bytes)1,014,966,72094,415,040
Size967.9 MB 90.0 MB
Events in quadrant A7,506,905614,569
Events in quadrant B7,933,384614,114
Events in quadrant C7,401,781603,397
Events in quadrant D7,472,695582,021

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0268180
B0280870
C0265040
D0267450

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A638020.031348%
B6380100.156740%
C638040.062696%
D63791492.335789%

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 6855 6381 125 125 1.82% 1.96%
B 6855 6381 184 184 2.68% 2.88%
C 6855 6381 113 113 1.65% 1.77%
D 6854 6380 298 298 4.35% 4.67%

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 14 170 28968 57.66 1947 1965 468.3
A 15 233 9907 16.96 1947 1965 468.3
A 11 79 7259 11.3 1947 1965 468.3
B 15 22 50375 101.24 2026 2036 477.5
B 12 52 45378 90.78 2026 2036 477.5
B 5 249 35897 70.92 2026 2036 477.5
C 15 241 225228 441.85 1818 1882 505.5
C 3 111 23220 42.21 1818 1882 505.5
C 9 144 22382 40.56 1818 1882 505.5
D 12 188 815354 1513.55 1739 1803 537.5
D 1 4 144388 265.27 1739 1803 537.5
D 13 252 14495 23.61 1739 1803 537.5

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