ASTROSAT CZTI

Data Quality Report

Orbit 17712

Creation date: 2024-06-27T17:39:54.330868
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_040T01_9000002628_17712cztM0_level2.evt modeM0/AS1T03_040T01_9000002628_17712cztM0_level2_quad_clean.evt
Size (bytes)195,658,56019,105,920
Size186.6 MB 18.2 MB
Events in quadrant A986,230111,530
Events in quadrant B1,044,848113,184
Events in quadrant C1,045,132109,686
Events in quadrant D2,711,20198,107

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A042041
B043571
C043891
D094741

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A200070.350000%
B200110.049975%
C2001231.149425%
D200155127.536232%

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 2000 2000 1 1 0.05% 0.05%
B 2001 2001 1 1 0.05% 0.05%
C 2001 2001 0 0 0.00% 0.00%
D 2001 2001 439 439 21.94% 21.94%

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 15 174 13937 257.29 253 246 53.2
A 0 226 2338 39.31 253 246 53.2
A 12 194 1946 31.95 253 246 53.2
B 0 189 21812 426.56 255 249 50.6
B 0 190 7350 140.47 255 249 50.6
B 0 230 6291 119.52 255 249 50.6
C 14 238 38732 645.01 248 249 59.7
C 3 233 18538 306.54 248 249 59.7
C 1 16 11427 187.35 248 249 59.7
D 7 238 1810155 31427.49 228 221 57.6
D 10 70 17466 299.44 228 221 57.6
D 8 195 7433 125.23 228 221 57.6

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