ASTROSAT CZTI

Data Quality Report

Orbit 23337

Creation date: 2024-06-27T18:52:59.990282
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/AS1A07_135T02_9000003450_23337cztM0_level2.evt modeM0/AS1A07_135T02_9000003450_23337cztM0_level2_quad_clean.evt
Size (bytes)829,837,44071,521,920
Size791.4 MB 68.2 MB
Events in quadrant A3,483,971445,075
Events in quadrant B3,535,811452,536
Events in quadrant C3,561,307443,245
Events in quadrant D14,068,597327,638

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041
B051
C051
D051

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015034219
B015095227
C015131238
D047191701

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01484
B01473
C01464
D01486

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7122801.123280%
B71211001.404297%
C71211552.176661%
D7102490068.994649%

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 7777 7137 0 0 0.00% 0.00%
B 7777 7129 0 0 0.00% 0.00%
C 7777 7132 0 0 0.00% 0.00%
D 7777 7105 4948 4948 63.62% 69.64%

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 13 254 10882 54.51 902 881 183.5
A 3 137 8146 39.6 902 881 183.5
A 0 226 7696 37.15 902 881 183.5
B 12 111 21114 117.06 893 870 172.9
B 11 111 18942 104.5 893 870 172.9
B 14 111 16109 88.12 893 870 172.9
C 14 238 135610 655.75 869 873 205.5
C 7 247 15863 72.95 869 873 205.5
C 10 9 9881 43.84 869 873 205.5
D 7 223 10818670 62789.4 704 685 172.3
D 1 52 268420 1553.98 704 685 172.3
D 12 227 137621 794.8 704 685 172.3

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