ASTROSAT CZTI

Data Quality Report

Orbit 22952

Creation date: 2024-06-27T18:47:56.312285
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/AS1A08_009T01_9000003390_22952cztM0_level2.evt modeM0/AS1A08_009T01_9000003390_22952cztM0_level2_quad_clean.evt
Size (bytes)528,842,88096,926,400
Size504.3 MB 92.4 MB
Events in quadrant A3,123,288630,720
Events in quadrant B3,266,457641,132
Events in quadrant C3,222,684621,650
Events in quadrant D5,953,967579,692

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137712
B0141452
C0140262
D0222972

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6628340.512975%
B6628751.131563%
C6628921.388051%
D662880612.160531%

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 7693 6629 0 0 0.00% 0.00%
B 7693 6629 20 20 0.26% 0.30%
C 7693 6629 1 1 0.01% 0.02%
D 7693 6629 532 532 6.92% 8.03%

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 10435 59.05 809 794 163.3
A 3 137 6986 37.93 809 794 163.3
A 0 226 6950 37.71 809 794 163.3
B 4 216 97515 631.73 807 787 153.1
B 12 111 18502 115.7 807 787 153.1
B 11 111 16208 100.72 807 787 153.1
C 14 238 124546 675.34 786 790 183.2
C 0 10 26651 141.13 786 790 183.2
C 13 61 5547 25.96 786 790 183.2
D 1 52 2701127 14779.82 750 729 182.7
D 13 153 240184 1310.59 750 729 182.7
D 13 172 52713 284.52 750 729 182.7

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