ASTROSAT CZTI

Data Quality Report

Orbit 15739

Creation date: 2024-06-27T17:12:53.058810
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_095T01_9000002330_15739cztM0_level2.evt modeM0/AS1T02_095T01_9000002330_15739cztM0_level2_quad_clean.evt
Size (bytes)923,477,76083,050,560
Size880.7 MB 79.2 MB
Events in quadrant A15,509,874377,255
Events in quadrant B3,908,265537,556
Events in quadrant C3,893,085520,719
Events in quadrant D4,120,400527,540

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0516804
B0166213
C0167543
D0176913

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7919522465.967925%
B79193394.280844%
C79193694.659679%
D79193494.407122%

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 8220 7923 4306 4306 52.38% 54.35%
B 8220 7923 0 0 0.00% 0.00%
C 8220 7923 25 25 0.30% 0.32%
D 8220 7923 63 63 0.77% 0.80%

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 15 239 12982754 97654.1 654 638 132.9
A 9 143 6647 45.2 654 638 132.9
A 13 248 6248 42.2 654 638 132.9
B 12 111 22486 113.98 974 950 188.9
B 11 111 19426 97.78 974 950 188.9
B 4 216 16285 81.16 974 950 188.9
C 14 238 140871 637.76 931 934 219.4
C 9 54 101665 459.08 931 934 219.4
C 3 233 10503 43.61 931 934 219.4
D 1 52 404468 1733.16 954 922 232.8
D 2 14 65428 277.04 954 922 232.8
D 2 234 34376 143.68 954 922 232.8

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