ASTROSAT CZTI

Data Quality Report

Orbit 20240422_A13_070T05_9000006198_level2

Creation date: 2024-04-26T11:10:52.948172
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/AS1A13_070T05_9000006198cztM0_level2.fits modeM0/AS1A13_070T05_9000006198cztM0_level2_quad_clean.evt
Size (bytes)1,318,173,1201,383,010,560
Size1.2 GB 1.3 GB
Events in quadrant A6,818,3446,842,381
Events in quadrant B7,710,9288,826,352
Events in quadrant C8,165,5408,678,317
Events in quadrant D6,589,2986,932,728

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01820
B01820
C01820
D01820

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031420
B031420
C031420
D031420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07543380
B04069870
C03365060
D05055030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1547474368428.229303%
B15474879245.120583%
C15474827101.751234%
D1547471944312.564379%

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 173053 151605 0 0 0.00% 0.00%
B 173053 154696 0 0 0.00% 0.00%
C 173053 154589 0 0 0.00% 0.00%
D 173053 154381 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 7 110 5601 8.69 1781 1663 453.2
A 0 29 5345 8.13 1781 1663 453.2
A 14 95 5112 7.61 1781 1663 453.2
B 2 9 7207 13.35 2043 1944 394.3
B 2 8 5741 9.63 2043 1944 394.3
B 3 17 5664 9.43 2043 1944 394.3
C 3 202 6260 7.56 2159 1997 564.1
C 1 81 6143 7.35 2159 1997 564.1
C 1 80 6010 7.11 2159 1997 564.1
D 15 47 4884 6.01 1894 1719 526.5
D 10 189 4811 5.87 1894 1719 526.5
D 3 31 4769 5.79 1894 1719 526.5

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