ASTROSAT CZTI

Data Quality Report

Orbit 21101

Creation date: 2024-06-27T18:23:33.457570
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/AS1A05_163T01_9000003118_21101cztM0_level2.evt modeM0/AS1A05_163T01_9000003118_21101cztM0_level2_quad_clean.evt
Size (bytes)556,251,84090,518,400
Size530.5 MB 86.3 MB
Events in quadrant A3,081,583596,704
Events in quadrant B3,409,259599,461
Events in quadrant C3,697,137566,523
Events in quadrant D6,234,345541,460

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133212
B0141792
C0150662
D0228482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6258430.687120%
B6259761.214251%
C62591913.051606%
D62591923.067583%

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 7453 6259 0 0 0.00% 0.00%
B 7454 6260 17 17 0.23% 0.27%
C 7454 6260 64 64 0.86% 1.02%
D 7454 6260 205 205 2.75% 3.27%

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 13 254 10448 60.8 795 781 159.0
A 0 226 6900 38.48 795 781 159.0
A 15 192 6785 37.76 795 781 159.0
B 7 220 103581 682.43 793 774 150.6
B 3 64 58654 384.2 793 774 150.6
B 0 190 56123 367.4 793 774 150.6
C 7 221 589270 3319.23 761 769 177.3
C 14 238 120463 675.09 761 769 177.3
C 9 54 18719 101.24 761 769 177.3
D 1 20 2179242 11639.68 767 747 187.2
D 1 52 918446 4903.26 767 747 187.2
D 9 1 89006 471.57 767 747 187.2

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