ASTROSAT CZTI

Data Quality Report

Orbit 17548

Creation date: 2024-06-27T17:37:52.380563
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/AS1T03_066T01_9000002600_17548cztM0_level2.evt modeM0/AS1T03_066T01_9000002600_17548cztM0_level2_quad_clean.evt
Size (bytes)617,227,20077,469,120
Size588.6 MB 73.9 MB
Events in quadrant A3,976,345470,924
Events in quadrant B5,300,870436,820
Events in quadrant C4,585,246455,754
Events in quadrant D4,316,379454,347

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168773
B0205102
C0185582
D0179012

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75801882.480211%
B75806979.195251%
C75812393.152618%
D75812343.086664%

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 8200 7582 23 23 0.28% 0.30%
B 8200 7581 450 450 5.49% 5.94%
C 8201 7581 4 4 0.05% 0.05%
D 8201 7583 84 84 1.02% 1.11%

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 14 237 334396 1758.64 926 904 189.6
A 15 174 78371 408.51 926 904 189.6
A 0 226 8189 38.42 926 904 189.6
B 10 245 1714266 9982.13 893 867 171.6
B 12 111 20501 114.39 893 867 171.6
B 5 172 18648 103.59 893 867 171.6
C 3 233 937696 4531.19 881 884 206.7
C 14 238 134481 646.18 881 884 206.7
C 5 218 39098 184.83 881 884 206.7
D 5 222 415182 1878.63 902 872 220.5
D 13 189 226572 1023.4 902 872 220.5
D 10 70 154769 697.82 902 872 220.5

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