ASTROSAT CZTI

Data Quality Report

Orbit 24896

Creation date: 2024-06-27T19:11:10.071629
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/AS1A08_003T13_9000003646_24896cztM0_level2.evt modeM0/AS1A08_003T13_9000003646_24896cztM0_level2_quad_clean.evt
Size (bytes)474,192,00082,503,360
Size452.2 MB 78.7 MB
Events in quadrant A3,248,465533,644
Events in quadrant B3,335,823549,326
Events in quadrant C3,498,479502,263
Events in quadrant D3,862,562485,362

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131652
B0134782
C0139912
D0153402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6128230.375326%
B6128340.554830%
C61281242.023499%
D6128480.783290%

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 7488 6129 0 0 0.00% 0.00%
B 7488 6129 0 0 0.00% 0.00%
C 7488 6129 36 36 0.48% 0.59%
D 7488 6129 55 55 0.73% 0.90%

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 9827 53.76 842 828 167.4
A 0 226 7289 38.6 842 828 167.4
A 3 137 7120 37.59 842 828 167.4
B 12 111 18730 112.41 844 825 159.3
B 11 111 16744 99.94 844 825 159.3
B 14 111 16151 96.22 844 825 159.3
C 14 238 131117 703.46 796 803 185.2
C 5 112 124968 670.26 796 803 185.2
C 7 247 80827 431.98 796 803 185.2
D 1 52 490265 2511.69 798 774 194.9
D 8 195 292225 1495.5 798 774 194.9
D 7 238 43922 221.4 798 774 194.9

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