ASTROSAT CZTI

Data Quality Report

Orbit 14444

Creation date: 2024-06-27T16:55:15.091684
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/AS1G08_025T01_9000002130_14444cztM0_level2.evt modeM0/AS1G08_025T01_9000002130_14444cztM0_level2_quad_clean.evt
Size (bytes)556,499,52097,672,320
Size530.7 MB 93.1 MB
Events in quadrant A3,300,931654,468
Events in quadrant B5,532,198594,021
Events in quadrant C4,383,560644,197
Events in quadrant D3,217,553632,784

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137863
B0205612
C0174702
D0136442

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6191490.791471%
B619187014.052657%
C6191891.437571%
D6191631.017606%

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 7497 6192 7 7 0.09% 0.11%
B 7496 6191 744 744 9.93% 12.02%
C 7497 6192 2 2 0.03% 0.03%
D 7497 6192 21 21 0.28% 0.34%

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 12 189 96599 591.52 803 787 162.0
A 8 15 76525 467.59 803 787 162.0
A 15 69 23997 143.29 803 787 162.0
B 10 16 2339852 16612.71 754 736 140.8
B 3 209 68621 482.13 754 736 140.8
B 0 219 45132 315.31 754 736 140.8
C 3 233 1313245 7270.57 787 793 180.5
C 13 61 5550 26.35 787 793 180.5
C 10 22 2772 10.96 787 793 180.5
D 10 199 101894 496.4 777 761 203.7
D 2 120 100765 490.86 777 761 203.7
D 13 122 24530 116.67 777 761 203.7

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