ASTROSAT CZTI

Data Quality Report

Orbit 29458

Creation date: 2024-06-27T20:04:19.811523
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/AS1A10_102T08_9000004240_29458cztM0_level2.evt modeM0/AS1A10_102T08_9000004240_29458cztM0_level2_quad_clean.evt
Size (bytes)1,423,068,480109,751,040
Size1.3 GB 104.7 MB
Events in quadrant A6,011,883741,495
Events in quadrant B6,082,299751,973
Events in quadrant C6,386,333697,295
Events in quadrant D23,881,585374,471

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238852
B0241442
C0255422
D0784513

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A109211211.107957%
B109222282.087530%
C109227807.141549%
D10921746168.317920%

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 13476 10923 1 1 0.01% 0.01%
B 13477 10924 24 24 0.18% 0.22%
C 13477 10924 5 5 0.04% 0.05%
D 13476 10922 6651 6651 49.35% 60.90%

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 0 13 174092 577.94 1509 1487 298.7
A 13 254 19744 61.13 1509 1487 298.7
A 1 113 17953 55.13 1509 1487 298.7
B 5 255 104904 370.16 1497 1463 279.4
B 0 156 53301 185.5 1497 1463 279.4
B 12 111 33746 115.52 1497 1463 279.4
C 14 238 405792 1266.83 1385 1398 319.2
C 3 233 300384 936.62 1385 1398 319.2
C 14 254 254688 793.47 1385 1398 319.2
D 1 52 8180280 39497.43 881 861 207.1
D 8 195 7292761 35211.71 881 861 207.1
D 7 80 4650366 22451.9 881 861 207.1

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