ASTROSAT CZTI

Data Quality Report

Orbit 39698

Creation date: 2024-06-27T22:07:54.553457
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/AS1A12_011T22_9000005492_39698cztM0_level2.fits modeM0/AS1A12_011T22_9000005492_39698cztM0_level2_quad_clean.evt
Size (bytes)579,147,84087,197,760
Size552.3 MB 83.2 MB
Events in quadrant A10,383,690399,701
Events in quadrant B3,177,768634,265
Events in quadrant C4,581,370611,511
Events in quadrant D2,838,601583,895

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0349402
B0136371
C0177161
D0129241

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5882260744.321659%
B58823175.389323%
C58822884.896294%
D5882380.646039%

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 7194 5883 2263 2263 31.46% 38.47%
B 7194 5883 167 167 2.32% 2.84%
C 7194 5883 281 281 3.91% 4.78%
D 7194 5883 22 22 0.31% 0.37%

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 15 222 4153109 38091.28 527 516 109.0
A 6 10 3342140 30652.35 527 516 109.0
A 15 174 452041 4141.79 527 516 109.0
B 10 246 662304 5547.92 607 590 119.3
B 5 172 63529 527.69 607 590 119.3
B 5 255 52178 432.52 607 590 119.3
C 9 187 1681650 11861.09 609 613 141.7
C 15 208 240912 1695.51 609 613 141.7
C 15 214 237171 1669.11 609 613 141.7
D 13 249 191772 1276.25 616 598 149.8
D 2 250 115869 769.53 616 598 149.8
D 12 233 84448 559.77 616 598 149.8

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