ASTROSAT CZTI

Data Quality Report

Orbit 38302

Creation date: 2024-06-27T21:50:58.688715
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/AS1A07_145T01_9000005370_38302cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38302cztM0_level2_quad_clean.evt
Size (bytes)423,792,00090,613,440
Size404.2 MB 86.4 MB
Events in quadrant A2,718,563641,464
Events in quadrant B3,681,053613,461
Events in quadrant C2,990,243633,645
Events in quadrant D5,908,833504,542

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110303
B0142092
C0118302
D0210882

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5002160.319872%
B50024428.836465%
C5002551.099560%
D500275815.153938%

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 7065 5003 7 7 0.10% 0.14%
B 7065 5003 289 289 4.09% 5.78%
C 7065 5003 50 50 0.71% 1.00%
D 7065 5003 626 626 8.86% 12.51%

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 379609 3181.56 593 582 119.1
A 12 189 30753 253.26 593 582 119.1
A 13 6 9463 74.55 593 582 119.1
B 5 184 809665 7389.89 574 560 109.5
B 5 172 409819 3737.93 574 560 109.5
B 15 85 76423 692.89 574 560 109.5
C 2 16 302543 2207.61 592 597 136.8
C 15 214 209981 1530.86 592 597 136.8
C 15 208 78123 566.81 592 597 136.8
D 2 16 1675970 12408.46 558 544 135.0
D 12 235 590818 4371.66 558 544 135.0
D 10 203 568315 4205.0 558 544 135.0

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