ASTROSAT CZTI

Data Quality Report

Orbit 35248

Creation date: 2022-04-05T17:53:59.741615
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/AS1A11_047T09_9000005054_35248cztM0_level2.evt modeM0/AS1A11_047T09_9000005054_35248cztM0_level2_quad_clean.evt
Size (bytes)235,920,96031,789,440
Size225.0 MB 30.3 MB
Events in quadrant A1,336,362216,260
Events in quadrant B2,521,363192,619
Events in quadrant C1,074,677225,818
Events in quadrant D2,093,231200,042

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050392
B086971
C041941
D074551

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17361619.274194%
B173662035.714286%
C1736533.052995%
D173619111.002304%

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 3860 1737 151 151 3.91% 8.69%
B 3860 1737 461 461 11.94% 26.54%
C 3860 1737 33 33 0.85% 1.90%
D 3860 1737 164 164 4.25% 9.44%

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 7 3 426381 9394.62 222 219 45.4
A 10 83 40901 896.82 222 219 45.4
A 9 143 4842 101.91 222 219 45.4
B 5 236 1409462 35585.8 197 192 39.6
B 5 172 293454 7405.23 197 192 39.6
B 5 200 18335 458.13 197 192 39.6
C 0 10 132279 2512.44 221 223 52.6
C 15 214 75732 1436.6 221 223 52.6
C 14 67 3229 57.19 221 223 52.6
D 8 195 723736 13696.44 212 206 52.8
D 7 80 306711 5802.14 212 206 52.8
D 1 47 92966 1755.94 212 206 52.8

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