ASTROSAT CZTI

Data Quality Report

Orbit 20200213_A07_046T01_9000003498_level2

Creation date: 2025-12-09T07:38:40.487944
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_046T01_9000003498cztM0_level2.fits modeM0/AS1A07_046T01_9000003498cztM0_level2_quad_clean.evt
Size (bytes)290,350,080275,935,680
Size276.9 MB 263.2 MB
Events in quadrant A1,793,2781,644,718
Events in quadrant B1,720,6601,656,387
Events in quadrant C1,751,3261,590,909
Events in quadrant D1,513,1241,449,470

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0609880
B0650940
C0622100
D0771730

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06020
B06020
C06020
D06020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A293052430.829210%
B293055671.934823%
C293054521.542399%
D2930413364.559105%

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 39463 29301 0 0 0.00% 0.00%
B 39463 29299 0 0 0.00% 0.00%
C 39463 29301 0 0 0.00% 0.00%
D 39463 29288 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 1693 10.82 465 434 116.4
A 7 110 1407 8.36 465 434 116.4
A 0 30 1341 7.79 465 434 116.4
B 2 9 1348 10.12 454 432 90.5
B 5 128 1164 8.09 454 432 90.5
B 5 232 1127 7.68 454 432 90.5
C 12 241 1208 6.49 463 432 119.6
C 3 126 1207 6.48 463 432 119.6
C 9 233 1170 6.17 463 432 119.6
D 4 246 1141 6.44 431 393 116.2
D 10 189 1100 6.09 431 393 116.2
D 6 67 1080 5.91 431 393 116.2

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