ASTROSAT CZTI

Data Quality Report

Orbit 31815

Creation date: 2024-06-27T20:33:05.781946
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_109T01_9000004646_31815cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31815cztM0_level2_quad_clean.evt
Size (bytes)749,381,760107,415,360
Size714.7 MB 102.4 MB
Events in quadrant A6,688,587688,817
Events in quadrant B5,908,740729,005
Events in quadrant C4,183,069709,486
Events in quadrant D5,493,004688,182

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240991
B0215921
C0169381
D0210011

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6263119619.096280%
B62634517.201022%
C62632954.710203%
D6262801.277547%

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 7553 6264 887 887 11.74% 14.16%
B 7553 6264 238 238 3.15% 3.80%
C 7553 6264 57 57 0.75% 0.91%
D 7552 6263 8 8 0.11% 0.13%

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 3356641 19818.62 862 849 169.3
A 13 254 10837 58.99 862 849 169.3
A 3 137 7858 41.39 862 849 169.3
B 6 159 1555150 9370.52 878 860 165.9
B 10 245 895587 5394.14 878 860 165.9
B 12 111 19192 110.52 878 860 165.9
C 0 10 508070 2556.93 857 867 198.4
C 14 238 167022 837.63 857 867 198.4
C 3 233 109133 545.79 857 867 198.4
D 8 195 2050360 9922.12 885 867 206.6
D 2 250 78920 377.87 885 867 206.6
D 2 234 27859 130.68 885 867 206.6

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