ASTROSAT CZTI

Data Quality Report

Orbit 34852

Creation date: 2022-03-10T00:49:30.094166
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/AS1C07_005T01_9000004992_34852cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34852cztM0_level2_quad_clean.evt
Size (bytes)903,504,96076,579,200
Size861.6 MB 73.0 MB
Events in quadrant A10,397,948310,529
Events in quadrant B8,928,355492,624
Events in quadrant C2,990,924589,154
Events in quadrant D4,680,792545,008

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0346303
B0300672
C0121992
D0175592

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5421384770.964767%
B5421295354.473344%
C5421791.457296%
D54214257.839882%

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 7123 5420 3120 3120 43.80% 57.56%
B 7124 5422 2662 2662 37.37% 49.10%
C 7124 5422 70 70 0.98% 1.29%
D 7124 5422 452 452 6.34% 8.34%

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 15 169 8961372 124092.98 355 348 72.2
A 10 83 20222 275.22 355 348 72.2
A 15 237 18053 245.18 355 348 72.2
B 5 14 1995902 20978.56 501 488 95.1
B 5 31 1989719 20913.56 501 488 95.1
B 5 15 1984999 20863.93 501 488 95.1
C 15 214 246214 1772.92 597 600 138.5
C 0 10 212642 1530.58 597 600 138.5
C 14 67 132573 952.62 597 600 138.5
D 12 227 989988 6966.75 583 568 142.0
D 8 195 611587 4302.33 583 568 142.0
D 2 250 299242 2103.04 583 568 142.0

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