ASTROSAT CZTI

Data Quality Report

Orbit 27467

Creation date: 2024-06-27T19:40:22.094597
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/AS1T03_249T01_9000003934_27467cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27467cztM0_level2_quad_clean.evt
Size (bytes)609,269,760104,921,280
Size581.0 MB 100.1 MB
Events in quadrant A4,285,705651,166
Events in quadrant B4,557,845647,383
Events in quadrant C4,323,648621,512
Events in quadrant D4,662,815621,493

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186790
B0194690
C0187370
D0201900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9169360.392627%
B9168720.785340%
C91681031.123473%
D9169810.883411%

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 9694 9170 0 0 0.00% 0.00%
B 9693 9169 16 16 0.17% 0.17%
C 9693 9169 5 5 0.05% 0.05%
D 9694 9170 63 63 0.65% 0.69%

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 15923 65.83 1109 1085 225.4
A 3 137 10696 42.64 1109 1085 225.4
A 0 226 9313 36.5 1109 1085 225.4
B 3 64 175436 820.61 1094 1062 212.5
B 15 32 26402 119.25 1094 1062 212.5
B 12 111 26118 117.91 1094 1062 212.5
C 14 238 167722 666.38 1058 1064 250.1
C 10 22 32713 126.55 1058 1064 250.1
C 13 61 7280 24.85 1058 1064 250.1
D 1 52 250698 964.95 1071 1039 258.7
D 2 250 228136 877.75 1071 1039 258.7
D 2 120 90711 346.59 1071 1039 258.7

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