ASTROSAT CZTI

Data Quality Report

Orbit 43663

Creation date: 2024-06-27T22:54:14.517708
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/AS1A12_018T01_9000005896_43663cztM0_level2.fits modeM0/AS1A12_018T01_9000005896_43663cztM0_level2_quad_clean.evt
Size (bytes)1,108,131,84068,518,080
Size1.0 GB 65.3 MB
Events in quadrant A5,835,466726,077
Events in quadrant B4,336,764745,436
Events in quadrant C15,795,20350,224
Events in quadrant D14,576,314122,090

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218321
B0170061
C0510581
D0475145

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61753064.955466%
B61751792.898785%
C6175587395.109312%
D6174520984.369938%

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 7335 6176 76 76 1.04% 1.23%
B 7335 6176 82 82 1.12% 1.33%
C 7335 6175 5604 5604 76.40% 90.75%
D 7334 6175 4708 4708 64.19% 76.24%

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 15 222 1699042 11783.82 708 692 144.1
A 10 83 865355 5999.37 708 692 144.1
A 15 223 349094 2417.35 708 692 144.1
B 4 206 345308 2600.83 705 687 132.5
B 0 230 268535 2021.43 705 687 132.5
B 10 128 256015 1926.94 705 687 132.5
C 15 142 13706727 216286.42 271 272 63.4
C 15 158 459393 7244.88 271 272 63.4
C 15 157 353969 5581.3 271 272 63.4
D 8 192 9560933 117669.29 298 288 81.3
D 7 80 1344563 16544.9 298 288 81.3
D 12 6 614992 7565.58 298 288 81.3

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