ASTROSAT CZTI

Data Quality Report

Orbit 30914

Creation date: 2024-06-27T20:21:07.730237
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/AS1C06_007T01_9000004470_30914cztM0_level2.evt modeM0/AS1C06_007T01_9000004470_30914cztM0_level2_quad_clean.evt
Size (bytes)613,448,64092,617,920
Size585.0 MB 88.3 MB
Events in quadrant A3,799,067604,140
Events in quadrant B5,531,931617,366
Events in quadrant C3,560,616568,252
Events in quadrant D5,243,948558,054

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156132
B0209912
C0148412
D0200862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65442634.018949%
B65441021.558680%
C65455508.403361%
D65452964.522536%

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 7579 6544 161 161 2.12% 2.46%
B 7579 6544 5 5 0.07% 0.08%
C 7580 6545 18 18 0.24% 0.28%
D 7580 6545 186 186 2.45% 2.84%

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 678464 4188.17 794 776 161.8
A 11 47 53181 323.87 794 776 161.8
A 13 254 12420 71.96 794 776 161.8
B 6 159 2153214 14332.8 799 779 150.2
B 0 183 60464 397.44 799 779 150.2
B 0 190 58103 381.71 799 779 150.2
C 14 238 244715 1389.95 748 753 175.5
C 14 254 178387 1012.06 748 753 175.5
C 0 10 110482 625.17 748 753 175.5
D 8 195 1042612 5672.03 765 745 183.7
D 12 218 527971 2870.27 765 745 183.7
D 12 233 230152 1248.91 765 745 183.7

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