ASTROSAT CZTI

Data Quality Report

Orbit 20200514_A07_134T03_9000003670_level2

Creation date: 2025-12-11T02:49:43.398058
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_134T03_9000003670cztM0_level2.fits modeM0/AS1A07_134T03_9000003670cztM0_level2_quad_clean.evt
Size (bytes)343,523,520214,891,200
Size327.6 MB 204.9 MB
Events in quadrant A2,156,0201,111,454
Events in quadrant B2,068,4521,123,744
Events in quadrant C2,098,0201,042,811
Events in quadrant D1,820,634967,275

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0690
B0690
C0690
D0690

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0693640
B0729430
C0831100
D01027960

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06660
B06660
C06660
D06660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A328834901.490132%
B328836491.973664%
C3288414644.452013%
D3288415284.646637%

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 44686 32885 0 0 0.00% 0.00%
B 44686 32885 0 0 0.00% 0.00%
C 44686 32887 0 0 0.00% 0.00%
D 44686 32842 0 0 0.00% 0.00%

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 29 2007 10.72 560 526 138.2
A 7 110 1674 8.31 560 526 138.2
A 9 19 1636 8.03 560 526 138.2
B 2 9 1643 10.24 547 524 109.3
B 2 8 1399 8.01 547 524 109.3
B 5 128 1347 7.53 547 524 109.3
C 12 241 1459 6.59 555 522 142.2
C 9 233 1415 6.28 555 522 142.2
C 9 209 1407 6.22 555 522 142.2
D 6 38 1285 5.92 519 475 136.8
D 3 14 1280 5.89 519 475 136.8
D 6 231 1275 5.85 519 475 136.8

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