ASTROSAT CZTI

Data Quality Report

Orbit 28347

Creation date: 2024-06-27T19:50:46.186634
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/AS1A10_116T01_9000004082_28347cztM0_level2.evt modeM0/AS1A10_116T01_9000004082_28347cztM0_level2_quad_clean.evt
Size (bytes)686,413,44096,143,040
Size654.6 MB 91.7 MB
Events in quadrant A4,440,172591,681
Events in quadrant B4,435,864596,917
Events in quadrant C4,443,741569,310
Events in quadrant D6,875,371545,974

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189980
B0187510
C0188110
D0260690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A87424455.090368%
B87425486.268588%
C87425316.074125%
D874287910.054907%

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 8802 8745 4 4 0.05% 0.05%
B 8802 8745 0 0 0.00% 0.00%
C 8802 8745 0 0 0.00% 0.00%
D 8802 8745 487 487 5.53% 5.57%

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 12 96 31612 131.88 1135 1107 231.3
A 15 174 31274 130.42 1135 1107 231.3
A 13 254 13025 51.53 1135 1107 231.3
B 12 111 28968 124.66 1123 1090 223.6
B 11 111 25858 110.75 1123 1090 223.6
B 14 111 24775 105.91 1123 1090 223.6
C 14 238 166917 632.2 1091 1098 262.3
C 8 128 14110 49.61 1091 1098 262.3
C 13 61 7375 23.93 1091 1098 262.3
D 7 238 1045512 3890.03 1098 1066 268.5
D 1 52 930022 3459.89 1098 1066 268.5
D 8 195 509636 1894.17 1098 1066 268.5

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