ASTROSAT CZTI

Data Quality Report

Orbit 19278

Creation date: 2024-06-27T18:00:58.566344
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_107T01_9000002852_19278cztM0_level2.evt modeM0/AS1A05_107T01_9000002852_19278cztM0_level2_quad_clean.evt
Size (bytes)476,547,84072,469,440
Size454.5 MB 69.1 MB
Events in quadrant A3,446,193441,313
Events in quadrant B3,540,191446,158
Events in quadrant C3,536,867433,500
Events in quadrant D3,475,837427,976

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144922
B0147202
C0145822
D0146382

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6388600.939261%
B6388891.393237%
C63871021.596994%
D6387771.205574%

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 7663 6389 1 1 0.01% 0.02%
B 7663 6389 7 7 0.09% 0.11%
C 7662 6388 0 0 0.00% 0.00%
D 7662 6388 27 27 0.35% 0.42%

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 5 16 12619 66.65 889 876 176.2
A 13 254 10060 52.13 889 876 176.2
A 0 226 7872 39.71 889 876 176.2
B 0 230 31329 185.4 880 862 164.3
B 3 64 25100 147.49 880 862 164.3
B 12 111 19124 111.13 880 862 164.3
C 14 238 135614 685.32 854 864 196.6
C 3 233 63601 319.07 854 864 196.6
C 13 61 5962 25.93 854 864 196.6
D 1 52 63056 295.23 869 847 210.7
D 12 218 42847 199.32 869 847 210.7
D 13 138 35609 164.97 869 847 210.7

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