ASTROSAT CZTI

Data Quality Report

Orbit 20170103_G06_164T01_9000000946_level2

Creation date: 2025-11-09T01:33:31.839707
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/AS1G06_164T01_9000000946cztM0_level2.fits modeM0/AS1G06_164T01_9000000946cztM0_level2_quad_clean.evt
Size (bytes)311,927,040287,703,360
Size297.5 MB 274.4 MB
Events in quadrant A1,885,1901,687,071
Events in quadrant B1,816,6181,682,536
Events in quadrant C1,843,5581,573,280
Events in quadrant D1,602,4381,470,652

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0692500
B0694550
C0694050
D0758130

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0570
C0570
D0570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06780
B06780
C06780
D06780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A334714991.490843%
B334715101.523707%
C334683831.144377%
D334725271.574450%

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 39033 33471 0 0 0.00% 0.00%
B 39033 33470 0 0 0.00% 0.00%
C 39033 33473 0 0 0.00% 0.00%
D 39033 33471 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 1795 10.68 489 458 125.2
A 7 110 1590 9.04 489 458 125.2
A 0 30 1395 7.49 489 458 125.2
B 2 9 1538 11.07 479 456 97.7
B 14 254 1332 8.96 479 456 97.7
B 12 226 1257 8.19 479 456 97.7
C 12 241 1309 6.71 487 452 127.7
C 2 191 1278 6.47 487 452 127.7
C 15 65 1231 6.1 487 452 127.7
D 6 231 1180 6.23 457 416 122.6
D 3 14 1168 6.13 457 416 122.6
D 7 5 1144 5.94 457 416 122.6

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