ASTROSAT CZTI

Data Quality Report

Orbit 27688

Creation date: 2024-06-27T19:43:08.820597
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/AS1T03_262T01_9000003988_27688cztM0_level2.evt modeM0/AS1T03_262T01_9000003988_27688cztM0_level2_quad_clean.evt
Size (bytes)160,551,36031,357,440
Size153.1 MB 29.9 MB
Events in quadrant A1,002,758224,599
Events in quadrant B1,338,196205,939
Events in quadrant C944,462218,259
Events in quadrant D1,484,336200,758

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039330
B049130
C037580
D053630

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1325695.207547%
B132525919.547170%
C1325695.207547%
D132517813.433962%

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 1325 1325 43 43 3.25% 3.25%
B 1325 1325 201 201 15.17% 15.17%
C 1325 1325 23 23 1.74% 1.74%
D 1325 1325 130 130 9.81% 9.81%

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 219795 5451.04 197 193 40.3
A 13 248 15480 379.46 197 193 40.3
A 8 192 7506 181.53 197 193 40.3
B 5 172 610877 17604.85 177 173 34.7
B 0 244 20284 579.74 177 173 34.7
B 0 229 9866 279.42 177 173 34.7
C 8 208 93368 2047.08 190 192 45.5
C 0 207 38648 844.88 190 192 45.5
C 3 233 32943 719.54 190 192 45.5
D 11 176 201051 4331.1 188 183 46.4
D 1 52 190432 4102.14 188 183 46.4
D 12 6 189052 4072.38 188 183 46.4

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