ASTROSAT CZTI

Data Quality Report

Orbit 16730

Creation date: 2024-06-27T17:26:54.153714
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_101T07_9000002482_16730cztM0_level2.evt modeM0/AS1A05_101T07_9000002482_16730cztM0_level2_quad_clean.evt
Size (bytes)325,016,64073,039,680
Size310.0 MB 69.7 MB
Events in quadrant A2,175,173482,051
Events in quadrant B2,189,520491,624
Events in quadrant C2,151,497474,436
Events in quadrant D3,033,843460,815

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A092360
B091670
C089630
D0118160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4301621.441525%
B4301140.325506%
C4301260.604511%
D4301711.650779%

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 4302 4302 55 55 1.28% 1.28%
B 4302 4302 4 4 0.09% 0.09%
C 4302 4302 5 5 0.12% 0.12%
D 4302 4302 82 82 1.91% 1.91%

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 15 174 217082 2107.43 507 498 102.8
A 3 1 5326 46.98 507 498 102.8
A 0 226 4404 38.01 507 498 102.8
B 15 35 96532 1010.28 510 498 95.1
B 0 229 27003 278.83 510 498 95.1
B 0 197 18033 184.47 510 498 95.1
C 3 233 96046 845.38 486 489 113.0
C 14 238 77864 684.52 486 489 113.0
C 0 207 61740 541.88 486 489 113.0
D 12 110 454842 3810.57 491 478 119.2
D 1 52 255558 2139.25 491 478 119.2
D 10 70 139722 1167.78 491 478 119.2

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