ASTROSAT CZTI

Data Quality Report

Orbit 14483

Creation date: 2024-06-27T16:55:49.398576
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/AS1G08_034T02_9000002136_14483cztM0_level2.evt modeM0/AS1G08_034T02_9000002136_14483cztM0_level2_quad_clean.evt
Size (bytes)460,451,52068,304,960
Size439.1 MB 65.1 MB
Events in quadrant A3,203,242412,406
Events in quadrant B3,554,263404,249
Events in quadrant C3,395,237397,354
Events in quadrant D3,345,908395,954

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136432
B0147281
C0143631
D0143171

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6567620.944115%
B6567901.370489%
C6567590.898432%
D6567841.279123%

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 7448 6569 4 4 0.05% 0.06%
B 7448 6569 22 22 0.30% 0.33%
C 7448 6569 1 1 0.01% 0.02%
D 7448 6569 32 32 0.43% 0.49%

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 12 189 27821 166.3 806 789 162.6
A 4 2 22955 136.36 806 789 162.6
A 8 15 17665 103.82 806 789 162.6
B 0 182 129641 832.25 801 781 154.8
B 0 189 115595 741.53 801 781 154.8
B 3 209 86836 555.79 801 781 154.8
C 3 233 313398 1728.74 777 780 180.8
C 0 207 48746 265.25 777 780 180.8
C 13 61 5477 25.97 777 780 180.8
D 2 120 112953 590.76 780 759 189.9
D 10 199 102249 534.39 780 759 189.9
D 10 70 58966 306.49 780 759 189.9

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