ASTROSAT CZTI

Data Quality Report

Orbit 01368

Creation date: 2024-06-27T14:11:38.984358
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/AS1G04_014T02_9000000232_01368cztM0_level2.evt modeM0/AS1G04_014T02_9000000232_01368cztM0_level2_quad_clean.evt
Size (bytes)1,166,788,800100,149,120
Size1.1 GB 95.5 MB
Events in quadrant A8,635,722653,428
Events in quadrant B9,646,775652,522
Events in quadrant C8,420,070632,364
Events in quadrant D8,185,025621,459

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0304512
B0334661
C0298581
D0292331

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6789500.736485%
B6789681.001620%
C6789580.854323%
D67891702.504051%

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 7359 6789 331 331 4.50% 4.88%
B 7359 6790 701 701 9.53% 10.32%
C 7359 6789 275 275 3.74% 4.05%
D 7359 6789 446 446 6.06% 6.57%

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 4 32 217980 420.2 2133 2147 513.6
A 12 243 106530 203.22 2133 2147 513.6
A 15 127 81875 155.22 2133 2147 513.6
B 8 4 883831 1692.29 2194 2204 521.0
B 12 52 249262 474.23 2194 2204 521.0
B 5 249 51594 94.8 2194 2204 521.0
C 15 241 225254 398.69 2000 2073 559.8
C 9 52 154448 272.2 2000 2073 559.8
C 7 220 79859 138.96 2000 2073 559.8
D 13 73 465788 759.95 1949 2023 610.3
D 9 53 340917 555.33 1949 2023 610.3
D 10 125 35664 55.13 1949 2023 610.3

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