ASTROSAT CZTI

Data Quality Report

Orbit 34511

Creation date: 2022-02-15T10:53:54.720081
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/AS1A05_156T01_9000004928_34511cztM0_level2.evt modeM0/AS1A05_156T01_9000004928_34511cztM0_level2_quad_clean.evt
Size (bytes)390,542,40066,147,840
Size372.5 MB 63.1 MB
Events in quadrant A2,487,410418,631
Events in quadrant B2,980,820418,711
Events in quadrant C2,786,518419,886
Events in quadrant D3,236,414398,435

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104883
B0119802
C0111682
D0130312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4954160.322971%
B4954961.937828%
C4954551.110214%
D4954601.211143%

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 7046 4955 5 5 0.07% 0.10%
B 7046 4955 53 53 0.75% 1.07%
C 7046 4955 35 35 0.50% 0.71%
D 7046 4955 56 56 0.79% 1.13%

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 17 41264 334.1 610 598 121.7
A 10 83 39840 322.4 610 598 121.7
A 9 143 38091 308.03 610 598 121.7
B 5 172 308685 2719.08 603 589 113.3
B 0 229 121599 1067.96 603 589 113.3
B 0 189 57413 501.5 603 589 113.3
C 15 214 209994 1533.35 597 603 136.6
C 0 10 157004 1145.31 597 603 136.6
C 14 67 72754 528.35 597 603 136.6
D 8 195 509745 3524.45 594 579 144.5
D 13 249 80093 550.4 594 579 144.5
D 1 52 51899 355.24 594 579 144.5

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