ASTROSAT CZTI

Data Quality Report

Orbit 44091

Creation date: 2024-06-27T22:59:16.108612
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/AS1A13_012T01_9000005942_44091cztM0_level2.fits modeM0/AS1A13_012T01_9000005942_44091cztM0_level2_quad_clean.evt
Size (bytes)1,137,401,280266,644,800
Size1.1 GB 254.3 MB
Events in quadrant A10,689,0581,773,439
Events in quadrant B7,889,7911,833,732
Events in quadrant C8,300,4221,748,256
Events in quadrant D13,905,3721,543,221

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430352
B0355782
C0367812
D0530642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03440
B03440
C03440
D03440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A170305393.165003%
B170315393.164817%
C170314502.642241%
D1703113407.868005%

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 17480 17032 4 4 0.02% 0.02%
B 17481 17033 11 11 0.06% 0.06%
C 17481 17033 60 60 0.34% 0.35%
D 17481 17033 729 729 4.17% 4.28%

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 10 83 2604071 6357.31 1974 1929 409.3
A 15 222 345448 839.25 1974 1929 409.3
A 7 3 95593 228.83 1974 1929 409.3
B 12 111 52462 129.11 1962 1895 391.7
B 11 111 48370 118.66 1962 1895 391.7
B 14 111 47756 117.09 1962 1895 391.7
C 3 233 348929 754.39 1941 1953 459.9
C 4 254 200502 431.68 1941 1953 459.9
C 14 254 50369 105.26 1941 1953 459.9
D 1 52 2164514 4570.3 1890 1833 473.2
D 5 235 1456007 3073.04 1890 1833 473.2
D 13 249 1206664 2546.12 1890 1833 473.2

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