ASTROSAT CZTI

Data Quality Report

Orbit 42158

Creation date: 2024-06-27T22:37:51.943937
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/AS1A12_088T21_9000005764_42158cztM0_level2.fits modeM0/AS1A12_088T21_9000005764_42158cztM0_level2_quad_clean.evt
Size (bytes)15,310,0804,348,800
Size14.6 MB 4.1 MB
Events in quadrant A136,28527,249
Events in quadrant B127,95627,193
Events in quadrant C120,90926,018
Events in quadrant D156,05723,696

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05610
B05770
C05560
D06620

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A27800.000000%
B27800.000000%
C27800.000000%
D27820.719424%

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 278 278 0 0 0.00% 0.00%
B 278 278 0 0 0.00% 0.00%
C 278 278 0 0 0.00% 0.00%
D 278 278 3 3 1.08% 1.08%

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 23684 2944.14 28 27 8.0
A 13 248 1737 212.81 28 27 8.0
A 15 223 921 111.26 28 27 8.0
B 5 255 6767 850.08 28 27 7.9
B 15 35 3354 419.62 28 27 7.9
B 0 229 3135 392.0 28 27 7.9
C 15 214 11053 1294.46 28 28 8.5
C 13 61 196 19.73 28 28 8.5
C 0 239 125 11.39 28 28 8.5
D 12 6 30833 3577.39 27 26 8.6
D 12 33 10119 1172.03 27 26 8.6
D 6 252 3336 384.37 27 26 8.6

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