ASTROSAT CZTI

Data Quality Report

Orbit 18991

Creation date: 2024-06-27T17:57:42.270448
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/AS1A05_132T01_9000002828_18991cztM0_level2.evt modeM0/AS1A05_132T01_9000002828_18991cztM0_level2_quad_clean.evt
Size (bytes)558,198,72094,728,960
Size532.3 MB 90.3 MB
Events in quadrant A3,136,809618,588
Events in quadrant B3,406,556632,828
Events in quadrant C3,284,947614,781
Events in quadrant D6,662,184574,897

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128721
B0137581
C0132251
D0240781

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6126480.783546%
B6127961.566835%
C6127801.305696%
D612765210.641423%

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 7461 6127 1 1 0.01% 0.02%
B 7462 6128 25 25 0.34% 0.41%
C 7462 6128 0 0 0.00% 0.00%
D 7462 6128 563 563 7.54% 9.19%

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 7453 40.88 811 797 162.8
A 0 226 7050 38.4 811 797 162.8
A 4 2 7028 38.27 811 797 162.8
B 7 220 122519 806.33 807 786 151.0
B 3 112 81715 536.05 807 786 151.0
B 12 111 17208 108.77 807 786 151.0
C 14 238 123696 661.62 794 803 185.7
C 3 233 64228 341.46 794 803 185.7
C 13 61 5526 25.43 794 803 185.7
D 1 52 2304958 12241.75 775 753 188.2
D 7 238 1407285 7472.6 775 753 188.2
D 2 234 23187 119.19 775 753 188.2

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