ASTROSAT CZTI

Data Quality Report

Orbit 35803

Creation date: 2022-05-14T11:32:45.015253
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/AS1A09_029T10_9000005140_35803cztM0_level2.evt modeM0/AS1A09_029T10_9000005140_35803cztM0_level2_quad_clean.evt
Size (bytes)441,048,96065,859,840
Size420.6 MB 62.8 MB
Events in quadrant A2,459,394420,993
Events in quadrant B3,136,623418,939
Events in quadrant C3,376,699402,497
Events in quadrant D4,030,364386,358

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106772
B0127262
C0132152
D0155882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A521360.115097%
B52131312.512948%
C52131542.954153%
D52133596.886630%

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 6615 5214 0 0 0.00% 0.00%
B 6615 5214 89 89 1.35% 1.71%
C 6615 5214 162 162 2.45% 3.11%
D 6615 5214 357 357 5.40% 6.85%

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 10 83 150671 1243.27 593 581 120.7
A 13 6 17255 138.12 593 581 120.7
A 3 137 6261 47.05 593 581 120.7
B 5 172 444094 3944.3 584 567 112.4
B 0 213 124735 1104.23 584 567 112.4
B 5 255 83120 734.15 584 567 112.4
C 0 10 395004 3008.09 563 565 131.1
C 0 207 388551 2958.88 563 565 131.1
C 15 214 216064 1643.45 563 565 131.1
D 14 52 685070 4997.95 559 543 137.0
D 13 249 478473 3489.52 559 543 137.0
D 12 6 212021 1544.07 559 543 137.0

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