ASTROSAT CZTI

Data Quality Report

Orbit 39165

Creation date: 2024-06-27T22:01:18.052999
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/AS1A12_054T02_9000005444_39165cztM0_level2.fits modeM0/AS1A12_054T02_9000005444_39165cztM0_level2_quad_clean.evt
Size (bytes)979,214,400162,057,600
Size933.9 MB 154.6 MB
Events in quadrant A5,652,4181,174,149
Events in quadrant B4,728,4641,204,695
Events in quadrant C5,266,8931,144,068
Events in quadrant D19,770,496642,039

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237484
B0219223
C0227453
D0661723

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A107081521.419499%
B10708360.336197%
C10708390.364214%
D10708476744.518117%

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 13544 10710 78 78 0.58% 0.73%
B 13544 10710 8 8 0.06% 0.07%
C 13544 10710 16 16 0.12% 0.15%
D 13544 10710 4423 4423 32.66% 41.30%

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 10 83 762405 3196.77 1172 1149 238.1
A 13 248 319650 1337.49 1172 1149 238.1
A 2 79 19879 78.65 1172 1149 238.1
B 5 172 96154 425.72 1165 1133 223.2
B 12 111 28382 122.08 1165 1133 223.2
B 11 111 26247 112.52 1165 1133 223.2
C 15 214 443109 1669.08 1138 1144 264.8
C 9 187 373379 1405.74 1138 1144 264.8
C 13 61 7848 25.32 1138 1144 264.8
D 12 235 15178312 65635.49 943 914 231.2
D 2 249 334636 1443.2 943 914 231.2
D 13 171 286042 1233.05 943 914 231.2

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