ASTROSAT CZTI

Data Quality Report

Orbit 11588

Creation date: 2024-06-27T16:15:33.854477
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_031T01_9000001702_11588cztM0_level2.evt modeM0/AS1G08_031T01_9000001702_11588cztM0_level2_quad_clean.evt
Size (bytes)575,389,44093,608,640
Size548.7 MB 89.3 MB
Events in quadrant A4,295,848587,180
Events in quadrant B4,851,657576,196
Events in quadrant C3,410,167586,744
Events in quadrant D4,356,075559,088

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175833
B0193082
C0153592
D0179272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75451441.908549%
B75454105.434062%
C7545420.556660%
D75452232.955600%

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 9181 7548 48 48 0.52% 0.64%
B 9181 7548 216 216 2.35% 2.86%
C 9181 7548 1 1 0.01% 0.01%
D 9181 7548 154 154 1.68% 2.04%

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 8 5 485801 2632.77 892 872 184.2
A 1 162 143649 775.16 892 872 184.2
A 1 178 80908 434.53 892 872 184.2
B 4 239 668476 3965.93 879 858 168.3
B 3 64 482789 2862.87 879 858 168.3
B 4 81 128705 759.47 879 858 168.3
C 9 54 17957 84.48 870 876 202.2
C 13 61 6435 27.49 870 876 202.2
C 15 127 3310 12.04 870 876 202.2
D 1 52 700995 3400.63 853 830 205.9
D 13 122 122116 589.07 853 830 205.9
D 8 195 114054 549.92 853 830 205.9

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