ASTROSAT CZTI

Data Quality Report

Orbit 26320

Creation date: 2024-06-27T19:27:26.324770
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/AS1A09_008T02_9000003796_26320cztM0_level2.evt modeM0/AS1A09_008T02_9000003796_26320cztM0_level2_quad_clean.evt
Size (bytes)517,187,520109,647,360
Size493.2 MB 104.6 MB
Events in quadrant A3,245,971711,350
Events in quadrant B3,307,122731,385
Events in quadrant C3,748,488704,614
Events in quadrant D4,881,894681,437

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143870
B0144890
C0154660
D0192440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70561552.196712%
B70561702.409297%
C70562723.854875%
D70565097.213719%

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 7256 7057 0 0 0.00% 0.00%
B 7256 7057 0 0 0.00% 0.00%
C 7256 7057 41 41 0.57% 0.58%
D 7256 7057 244 244 3.36% 3.46%

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 13 254 10209 55.19 839 819 170.1
A 3 137 8011 42.27 839 819 170.1
A 11 29 7740 40.68 839 819 170.1
B 12 16 28513 173.65 834 809 159.5
B 12 111 19671 118.23 834 809 159.5
B 11 111 17973 107.58 834 809 159.5
C 3 233 359171 1889.58 811 816 189.6
C 14 238 129029 676.06 811 816 189.6
C 2 16 100533 525.8 811 816 189.6
D 1 52 1354995 7013.76 808 788 193.1
D 11 176 240719 1242.66 808 788 193.1
D 12 233 222169 1146.59 808 788 193.1

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