ASTROSAT CZTI

Data Quality Report

Orbit 34724

Creation date: 2022-03-02T17:39:45.607432
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_001T01_9000004982_34724cztM0_level2.evt modeM0/AS1C07_001T01_9000004982_34724cztM0_level2_quad_clean.evt
Size (bytes)468,339,840100,889,280
Size446.6 MB 96.2 MB
Events in quadrant A2,844,139672,110
Events in quadrant B2,811,724693,340
Events in quadrant C2,895,590691,366
Events in quadrant D5,265,143619,778

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120273
B0117622
C0118512
D0194482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5412170.314117%
B5412530.979305%
C5412751.385809%
D54124648.573540%

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 7295 5413 15 15 0.21% 0.28%
B 7295 5413 34 34 0.47% 0.63%
C 7295 5413 48 48 0.66% 0.89%
D 7295 5413 455 455 6.24% 8.41%

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 314482 2526.3 628 618 124.2
A 10 83 47557 377.81 628 618 124.2
A 7 48 22628 177.16 628 618 124.2
B 5 172 227680 1922.16 631 616 118.1
B 0 190 25530 210.9 631 616 118.1
B 5 255 24633 203.31 631 616 118.1
C 0 10 234462 1655.63 616 621 141.2
C 15 214 229092 1617.61 616 621 141.2
C 14 67 19421 133.11 616 621 141.2
D 2 250 1726369 11253.59 588 574 153.4
D 8 195 787849 5133.68 588 574 153.4
D 1 20 185883 1208.37 588 574 153.4

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