ASTROSAT CZTI

Data Quality Report

Orbit 26000

Creation date: 2024-06-27T19:23:42.579971
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/AS1A07_068T01_9000003760_26000cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_26000cztM0_level2_quad_clean.evt
Size (bytes)560,998,08098,991,360
Size535.0 MB 94.4 MB
Events in quadrant A3,307,219656,599
Events in quadrant B3,815,751647,349
Events in quadrant C3,813,252614,287
Events in quadrant D5,589,436602,204

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141310
B0157090
C0156810
D0212730

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6853410.598278%
B68531402.042901%
C6853841.225741%
D68534376.376769%

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 7413 6854 0 0 0.00% 0.00%
B 7413 6854 55 55 0.74% 0.80%
C 7413 6854 0 0 0.00% 0.00%
D 7413 6854 359 359 4.84% 5.24%

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 0 13 11729 63.72 853 835 171.0
A 13 254 9903 53.04 853 835 171.0
A 3 137 8092 42.45 853 835 171.0
B 10 245 454540 2810.34 833 811 161.4
B 0 190 81241 498.17 833 811 161.4
B 12 111 19318 114.63 833 811 161.4
C 0 239 527691 2820.57 799 805 186.8
C 14 238 128952 686.01 799 805 186.8
C 0 207 32546 169.92 799 805 186.8
D 1 52 2409633 12549.29 798 776 192.0
D 7 80 57717 296.64 798 776 192.0
D 8 195 50927 261.27 798 776 192.0

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