ASTROSAT CZTI

Data Quality Report

Orbit 13673

Creation date: 2024-06-27T16:44:21.136785
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_070T01_9000002028_13673cztM0_level2.evt modeM0/AS1G08_070T01_9000002028_13673cztM0_level2_quad_clean.evt
Size (bytes)589,947,840103,599,360
Size562.6 MB 98.8 MB
Events in quadrant A3,205,433685,741
Events in quadrant B3,732,353736,715
Events in quadrant C3,363,407658,670
Events in quadrant D7,115,434592,902

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137353
B0152112
C0139652
D0255902

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6641210.316217%
B6641931.400392%
C6641120.180696%
D664188213.281132%

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 7657 6643 1 1 0.01% 0.02%
B 7657 6643 18 18 0.24% 0.27%
C 7657 6643 0 0 0.00% 0.00%
D 7657 6643 854 854 11.15% 12.86%

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 1 162 24969 144.42 821 804 167.3
A 9 143 8606 46.63 821 804 167.3
A 1 178 8579 46.47 821 804 167.3
B 0 219 275885 1727.72 837 821 159.2
B 0 214 77570 482.07 837 821 159.2
B 0 182 49317 304.61 837 821 159.2
C 3 233 248936 1334.58 797 802 185.9
C 13 61 5764 26.69 797 802 185.9
C 8 128 4226 18.42 797 802 185.9
D 13 122 3600168 19655.86 754 735 183.1
D 5 222 226078 1230.56 754 735 183.1
D 12 110 158748 862.88 754 735 183.1

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