ASTROSAT CZTI

Data Quality Report

Orbit 20161117_G06_139T05_9000000804_level2

Creation date: 2025-11-07T19:50:11.200134
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_139T05_9000000804cztM0_level2.fits modeM0/AS1G06_139T05_9000000804cztM0_level2_quad_clean.evt
Size (bytes)381,208,320392,356,800
Size363.5 MB 374.2 MB
Events in quadrant A3,354,1093,114,264
Events in quadrant B1,946,9992,184,958
Events in quadrant C1,988,1352,098,148
Events in quadrant D1,716,7561,949,188

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0520
C0510
D0530

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07480
B07640
C07540
D07500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0824170
B0828480
C0772960
D0792810

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A367814731.285990%
B368889222.499458%
C370063210.867427%
D369274141.121131%

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 57659 38769 0 0 0.00% 0.00%
B 57659 38949 0 0 0.00% 0.00%
C 57659 39067 0 0 0.00% 0.00%
D 57659 38986 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 2115 7.14 883 858 176.0
A -1 -1 -1 -1.0 883 858 176.0
A -1 -1 -1 -1.0 883 858 176.0
B 2 9 1702 11.5 512 484 105.9
B 12 226 1401 8.66 512 484 105.9
B 14 254 1349 8.17 512 484 105.9
C 1 81 1427 6.68 524 483 141.3
C 1 80 1425 6.67 524 483 141.3
C 12 241 1403 6.51 524 483 141.3
D 3 31 1253 6.01 490 444 134.5
D 3 14 1253 6.01 490 444 134.5
D 6 231 1250 5.99 490 444 134.5

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