ASTROSAT CZTI

Data Quality Report

Orbit 14786

Creation date: 2024-06-27T16:59:40.870877
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/AS1A04_022T02_9000002184_14786cztM0_level2.evt modeM0/AS1A04_022T02_9000002184_14786cztM0_level2_quad_clean.evt
Size (bytes)925,634,880168,632,640
Size882.8 MB 160.8 MB
Events in quadrant A6,040,8531,071,962
Events in quadrant B8,055,8641,051,850
Events in quadrant C6,864,9301,061,087
Events in quadrant D6,204,5111,036,906

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0267754
B0326673
C0284923
D0279723

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02580
B02580
C02580
D02580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12819520.405648%
B128195554.329511%
C12819510.397847%
D128191471.146735%

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 14160 12822 2 2 0.01% 0.02%
B 14160 12822 347 347 2.45% 2.71%
C 14160 12822 11 11 0.08% 0.09%
D 14160 12822 120 120 0.85% 0.94%

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 12 189 172018 559.26 1497 1464 305.0
A 3 1 101891 329.31 1497 1464 305.0
A 9 143 18851 57.01 1497 1464 305.0
B 10 16 1016844 3608.49 1476 1437 281.4
B 3 64 1012653 3593.6 1476 1437 281.4
B 0 228 59324 205.72 1476 1437 281.4
C 3 233 1173531 3527.25 1445 1451 332.3
C 0 207 45034 131.16 1445 1451 332.3
C 13 61 10483 27.18 1445 1451 332.3
D 15 0 615643 1753.57 1446 1400 350.3
D 2 234 49145 136.3 1446 1400 350.3
D 2 120 30349 82.64 1446 1400 350.3

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