ASTROSAT CZTI

Data Quality Report

Orbit 26816

Creation date: 2024-06-27T19:33:17.164543
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_079T01_9000003864_26816cztM0_level2.evt modeM0/AS1A09_079T01_9000003864_26816cztM0_level2_quad_clean.evt
Size (bytes)881,389,440109,074,240
Size840.6 MB 104.0 MB
Events in quadrant A3,826,925797,688
Events in quadrant B13,187,769524,426
Events in quadrant C3,252,795790,489
Events in quadrant D5,986,654734,947

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157010
B0436760
C0138570
D0222090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6504390.599631%
B6504435166.897294%
C6504841.291513%
D650471010.916359%

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 7389 6505 0 0 0.00% 0.00%
B 7389 6505 3863 3863 52.28% 59.39%
C 7389 6505 7 7 0.09% 0.11%
D 7389 6504 604 604 8.17% 9.29%

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 0 13 849135 5472.09 771 753 155.0
A 13 254 10782 64.69 771 753 155.0
A 3 137 7258 41.96 771 753 155.0
B 0 189 10955675 103538.55 551 536 105.8
B 3 64 25867 239.41 551 536 105.8
B 10 246 16648 152.28 551 536 105.8
C 15 208 135388 771.48 746 749 174.5
C 14 238 121984 694.68 746 749 174.5
C 2 16 87436 496.72 746 749 174.5
D 1 52 1828681 10682.08 717 701 171.1
D 7 80 858607 5013.31 717 701 171.1
D 2 250 357511 2085.07 717 701 171.1

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