ASTROSAT CZTI

Data Quality Report

Orbit 36273

Creation date: 2022-06-14T10:05:48.636564
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_071T36_9000005182_36273cztM0_level2.evt modeM0/AS1A10_071T36_9000005182_36273cztM0_level2_quad_clean.evt
Size (bytes)125,582,40029,989,440
Size119.8 MB 28.6 MB
Events in quadrant A790,741204,606
Events in quadrant B922,572204,821
Events in quadrant C910,003198,779
Events in quadrant D1,077,246190,260

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032621
B037281
C035651
D042111

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A147150.339905%
B1471312.107410%
C1471493.331067%
D1471261.767505%

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 1471 1471 0 0 0.00% 0.00%
B 1471 1471 18 18 1.22% 1.22%
C 1471 1471 37 37 2.52% 2.52%
D 1471 1471 20 20 1.36% 1.36%

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 74789 1978.66 183 179 37.7
A 13 6 4848 123.82 183 179 37.7
A 9 143 2914 72.53 183 179 37.7
B 5 236 59794 1672.08 178 173 35.7
B 0 190 47890 1338.23 178 173 35.7
B 5 172 46388 1296.11 178 173 35.7
C 0 10 158060 3730.56 175 176 42.3
C 15 214 63745 1502.04 175 176 42.3
C 0 207 2327 50.82 175 176 42.3
D 12 6 211277 4737.12 179 173 44.6
D 2 153 46037 1029.18 179 173 44.6
D 13 249 35158 785.05 179 173 44.6

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