ASTROSAT CZTI

Data Quality Report

Orbit 40097

Creation date: 2024-06-27T22:12:18.287866
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_004T01_9000005520_40097cztM0_level2.fits modeM0/AS1A12_004T01_9000005520_40097cztM0_level2_quad_clean.evt
Size (bytes)391,910,40090,604,800
Size373.8 MB 86.4 MB
Events in quadrant A2,747,920622,804
Events in quadrant B2,493,910649,832
Events in quadrant C5,780,477551,111
Events in quadrant D3,088,125562,449

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113453
B0106822
C0206242
D0126292

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5102110.215602%
B5102190.372403%
C510276915.072521%
D51021072.097217%

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 7075 5103 3 3 0.04% 0.06%
B 7075 5103 10 10 0.14% 0.20%
C 7075 5103 729 729 10.30% 14.29%
D 7075 5103 93 93 1.31% 1.82%

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 10 83 435730 3661.2 585 574 118.9
A 9 143 36194 299.69 585 574 118.9
A 2 79 9943 78.83 585 574 118.9
B 4 171 86162 758.88 588 572 112.8
B 0 189 77369 680.92 588 572 112.8
B 0 230 22700 196.2 588 572 112.8
C 9 187 2941281 22919.23 551 556 128.3
C 14 254 367900 2862.98 551 556 128.3
C 15 214 203317 1580.27 551 556 128.3
D 12 227 333234 2376.57 570 554 140.0
D 13 171 148909 1059.81 570 554 140.0
D 1 47 120284 855.32 570 554 140.0

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