ASTROSAT CZTI

Data Quality Report

Orbit 12145

Creation date: 2024-06-27T16:23:01.141241
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/AS1G08_065T01_9000001796_12145cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12145cztM0_level2_quad_clean.evt
Size (bytes)544,665,60093,942,720
Size519.4 MB 89.6 MB
Events in quadrant A3,323,484620,494
Events in quadrant B4,137,676612,266
Events in quadrant C3,122,000611,925
Events in quadrant D5,481,411556,861

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139463
B0164702
C0133062
D0207112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63491221.921562%
B63492914.583399%
C6349841.323043%
D634967410.615845%

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 7545 6351 4 4 0.05% 0.06%
B 7545 6351 110 110 1.46% 1.73%
C 7545 6351 0 0 0.00% 0.00%
D 7545 6351 555 555 7.36% 8.74%

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 15 239 56656 344.03 816 802 162.4
A 1 162 47928 290.27 816 802 162.4
A 1 178 21513 127.57 816 802 162.4
B 4 239 450813 3020.7 801 782 149.0
B 0 85 171275 1144.39 801 782 149.0
B 3 64 128657 858.32 801 782 149.0
C 13 61 5860 27.8 800 805 181.8
C 12 4 3244 13.41 800 805 181.8
C 4 175 2549 9.59 800 805 181.8
D 1 52 2039075 10989.64 773 749 185.5
D 5 222 205029 1101.38 773 749 185.5
D 8 195 158807 852.17 773 749 185.5

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