ASTROSAT CZTI

Data Quality Report

Orbit 19689

Creation date: 2024-06-27T18:06:16.811300
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/AS1A05_101T05_9000002938_19689cztM0_level2.evt modeM0/AS1A05_101T05_9000002938_19689cztM0_level2_quad_clean.evt
Size (bytes)521,118,720142,637,760
Size497.0 MB 136.0 MB
Events in quadrant A3,472,711960,454
Events in quadrant B3,682,920967,820
Events in quadrant C3,746,044937,162
Events in quadrant D4,358,246920,207

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156692
B0160532
C0159152
D0183432

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76812012.616847%
B76822232.902890%
C76822513.267378%
D76813424.452545%

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 7871 7681 0 0 0.00% 0.00%
B 7872 7683 10 10 0.13% 0.13%
C 7872 7683 0 0 0.00% 0.00%
D 7871 7682 179 179 2.27% 2.33%

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 0 226 7713 37.76 900 879 181.0
A 3 137 7314 35.55 900 879 181.0
A 12 194 6574 31.46 900 879 181.0
B 4 216 67272 392.54 895 870 169.2
B 0 198 29927 171.77 895 870 169.2
B 0 230 21323 120.91 895 870 169.2
C 14 238 136354 663.76 873 877 204.1
C 3 233 133018 647.42 873 877 204.1
C 8 208 58525 282.44 873 877 204.1
D 7 238 842214 4032.92 879 854 208.6
D 1 52 91829 436.07 879 854 208.6
D 12 218 76233 361.32 879 854 208.6

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