ASTROSAT CZTI

Data Quality Report

Orbit 30551

Creation date: 2024-06-27T20:16:51.158378
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_055T01_9000004400_30551cztM0_level2.evt modeM0/AS1A10_055T01_9000004400_30551cztM0_level2_quad_clean.evt
Size (bytes)565,732,80089,498,880
Size539.5 MB 85.4 MB
Events in quadrant A3,481,874567,554
Events in quadrant B5,498,976566,855
Events in quadrant C3,804,449533,726
Events in quadrant D3,856,393537,025

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149602
B0220254
C0156942
D0162112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7257690.950806%
B72571431.970511%
C72572112.907538%
D7257991.364200%

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 8832 7259 0 0 0.00% 0.00%
B 8832 7259 6 6 0.07% 0.08%
C 8832 7259 50 50 0.57% 0.69%
D 8832 7259 41 41 0.46% 0.56%

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 25824 139.1 890 872 179.4
A 8 192 23782 127.71 890 872 179.4
A 13 254 12528 64.98 890 872 179.4
B 6 159 1952355 11502.13 883 862 169.7
B 4 171 47482 274.78 883 862 169.7
B 12 111 21184 119.78 883 862 169.7
C 0 10 235580 1175.41 846 848 199.7
C 14 238 138458 689.07 846 848 199.7
C 3 233 118663 589.95 846 848 199.7
D 1 52 339689 1658.42 860 839 204.3
D 8 195 76002 367.87 860 839 204.3
D 2 250 75362 364.74 860 839 204.3

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