ASTROSAT CZTI

Data Quality Report

Orbit 23874

Creation date: 2024-06-27T18:59:40.662395
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/AS1A07_142T01_9000003540_23874cztM0_level2.evt modeM0/AS1A07_142T01_9000003540_23874cztM0_level2_quad_clean.evt
Size (bytes)95,924,16026,974,080
Size91.5 MB 25.7 MB
Events in quadrant A632,573180,372
Events in quadrant B668,511184,252
Events in quadrant C659,984175,627
Events in quadrant D843,718169,749

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028680
B029000
C028680
D034310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A143100.000000%
B143110.069881%
C143160.419287%
D1431281.956674%

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 1431 1431 0 0 0.00% 0.00%
B 1431 1431 0 0 0.00% 0.00%
C 1431 1431 0 0 0.00% 0.00%
D 1431 1431 36 36 2.52% 2.52%

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 2305 60.75 163 160 35.3
A 3 137 1539 39.06 163 160 35.3
A 0 226 1366 34.16 163 160 35.3
B 0 189 10414 296.98 166 161 34.5
B 12 111 3958 109.98 166 161 34.5
B 11 111 3413 94.2 166 161 34.5
C 14 238 25143 614.16 162 163 40.7
C 13 61 1094 22.89 162 163 40.7
C 0 10 560 9.76 162 163 40.7
D 1 52 163889 3945.01 159 154 41.5
D 8 195 36300 870.9 159 154 41.5
D 7 238 33034 792.21 159 154 41.5

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