ASTROSAT CZTI

Data Quality Report

Orbit 31759

Creation date: 2024-06-27T20:32:23.190193
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/AS1A10_059T01_9000004634_31759cztM0_level2.evt modeM0/AS1A10_059T01_9000004634_31759cztM0_level2_quad_clean.evt
Size (bytes)853,600,32091,140,480
Size814.1 MB 86.9 MB
Events in quadrant A8,075,053575,811
Events in quadrant B6,574,366593,188
Events in quadrant C5,789,111579,872
Events in quadrant D5,005,588587,421

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0281251
B0237711
C0214711
D0188233

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6052212835.161930%
B605289914.854594%
C605369711.514951%
D60522253.717779%

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 7386 6052 1421 1421 19.24% 23.48%
B 7387 6053 518 518 7.01% 8.56%
C 7388 6054 355 355 4.81% 5.86%
D 7387 6053 146 146 1.98% 2.41%

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 0 13 5402080 39510.44 691 681 136.7
A 13 254 9585 65.13 691 681 136.7
A 3 137 6146 39.98 691 681 136.7
B 6 159 1724023 12312.71 749 733 140.0
B 5 172 1628818 11632.49 749 733 140.0
B 0 190 106971 759.06 749 733 140.0
C 0 10 1577673 9447.45 723 729 166.9
C 3 233 1027383 6150.67 723 729 166.9
C 10 22 199248 1189.32 723 729 166.9
D 8 195 1436818 8123.67 756 740 176.8
D 12 218 318566 1797.89 756 740 176.8
D 12 233 168780 950.58 756 740 176.8

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