ASTROSAT CZTI

Data Quality Report

Orbit 13943

Creation date: 2024-06-27T16:48:15.869887
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/AS1T02_041T01_9000002058_13943cztM0_level2.evt modeM0/AS1T02_041T01_9000002058_13943cztM0_level2_quad_clean.evt
Size (bytes)554,483,520130,489,920
Size528.8 MB 124.4 MB
Events in quadrant A3,610,282830,971
Events in quadrant B4,299,178843,438
Events in quadrant C3,946,557879,976
Events in quadrant D4,391,230839,271

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165533
B0182622
C0171542
D0188012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80361251.555500%
B80362322.887008%
C8036720.895968%
D80361301.617720%

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 8511 8036 0 0 0.00% 0.00%
B 8511 8036 39 39 0.46% 0.49%
C 8511 8037 19 19 0.22% 0.24%
D 8511 8037 22 22 0.26% 0.27%

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 1 162 20371 102.75 929 908 189.4
A 0 226 8097 37.95 929 908 189.4
A 12 194 7005 32.19 929 908 189.4
B 3 64 219596 1233.62 934 907 177.3
B 0 230 175203 983.2 934 907 177.3
B 4 173 57191 317.5 934 907 177.3
C 4 254 214250 998.28 924 925 213.7
C 3 233 130718 607.38 924 925 213.7
C 13 61 6681 26.94 924 925 213.7
D 13 122 421476 1954.18 906 881 215.2
D 1 52 276986 1282.85 906 881 215.2
D 12 110 60150 275.38 906 881 215.2

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