ASTROSAT CZTI

Data Quality Report

Orbit 02947

Creation date: 2024-06-27T14:22:34.357908
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/AS1G05_238T04_9000000416_02947cztM0_level2.evt modeM0/AS1G05_238T04_9000000416_02947cztM0_level2_quad_clean.evt
Size (bytes)433,595,52031,858,560
Size413.5 MB 30.4 MB
Events in quadrant A2,802,699183,878
Events in quadrant B1,985,996183,563
Events in quadrant C2,025,196180,137
Events in quadrant D6,050,760138,777

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109162
B086541
C085151
D0206951

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A39211764.488651%
B3921290.739607%
C3921180.459067%
D3921141436.062229%

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 6076 3922 130 130 2.14% 3.31%
B 6076 3922 22 22 0.36% 0.56%
C 6076 3922 18 18 0.30% 0.46%
D 6076 3922 1143 1143 18.81% 29.14%

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 14 238 508472 5839.55 419 408 87.0
A 12 133 437540 5024.27 419 408 87.0
A 14 63 109476 1253.6 419 408 87.0
B 2 249 99338 1165.8 426 416 84.9
B 3 27 86006 1008.68 426 416 84.9
B 8 3 36167 421.33 426 416 84.9
C 0 219 202215 2084.62 406 406 96.8
C 6 80 68857 707.08 406 406 96.8
C 1 192 56747 581.98 406 406 96.8
D 15 50 1633192 18081.72 355 348 90.3
D 15 194 1059047 11723.78 355 348 90.3
D 2 102 716045 7925.46 355 348 90.3

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
Veto Counter