ASTROSAT CZTI

Data Quality Report

Orbit 26935

Creation date: 2024-06-27T19:34:40.904009
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/AS1A09_134T01_9000003896_26935cztM0_level2.evt modeM0/AS1A09_134T01_9000003896_26935cztM0_level2_quad_clean.evt
Size (bytes)599,751,36089,631,360
Size572.0 MB 85.5 MB
Events in quadrant A4,618,232560,450
Events in quadrant B3,870,527612,614
Events in quadrant C3,242,986589,060
Events in quadrant D6,011,639518,568

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177340
B0153770
C0134090
D0221180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62085418.714562%
B62081362.190722%
C62081081.739691%
D62095929.534547%

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 7387 6208 449 449 6.08% 7.23%
B 7388 6209 87 87 1.18% 1.40%
C 7388 6209 33 33 0.45% 0.53%
D 7389 6210 561 561 7.59% 9.03%

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 14 235 1622397 10716.72 751 739 151.3
A 0 13 69278 452.94 751 739 151.3
A 8 192 22950 146.78 751 739 151.3
B 10 245 375780 2527.9 785 768 148.3
B 0 189 323620 2176.3 785 768 148.3
B 10 246 25636 167.63 785 768 148.3
C 0 207 160302 904.84 753 758 176.3
C 14 238 121547 685.04 753 758 176.3
C 15 208 12310 65.52 753 758 176.3
D 1 52 1465958 8560.6 718 698 171.2
D 7 80 1140717 6660.42 718 698 171.2
D 2 250 461254 2690.74 718 698 171.2

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