ASTROSAT CZTI

Data Quality Report

Orbit 04994

Creation date: 2024-06-27T14:49:51.213709
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/AS1G05_115T01_9000000634_04994cztM0_level2.evt modeM0/AS1G05_115T01_9000000634_04994cztM0_level2_quad_clean.evt
Size (bytes)464,765,76074,934,720
Size443.2 MB 71.5 MB
Events in quadrant A2,985,429464,190
Events in quadrant B3,329,413469,757
Events in quadrant C2,832,708466,322
Events in quadrant D4,512,824442,057

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127712
B0137661
C0125731
D0175021

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6111961.570938%
B6111901.472754%
C6111631.030928%
D61114727.723777%

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 7356 6112 1 1 0.01% 0.02%
B 7356 6112 4 4 0.05% 0.07%
C 7356 6112 3 3 0.04% 0.05%
D 7356 6112 386 386 5.25% 6.32%

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 13 251 63035 415.19 745 729 150.1
A 4 2 39539 258.62 745 729 150.1
A 15 234 10343 64.06 745 729 150.1
B 15 204 287149 2061.5 744 727 138.9
B 0 219 132145 945.87 744 727 138.9
B 4 48 22128 154.03 744 727 138.9
C 1 16 22466 132.74 719 723 163.8
C 13 61 5964 32.0 719 723 163.8
C 8 222 2274 9.47 719 723 163.8
D 2 33 1052048 6043.65 714 692 174.0
D 2 136 142636 815.96 714 692 174.0
D 2 63 131212 750.29 714 692 174.0

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