ASTROSAT CZTI

Data Quality Report

Orbit 21480

Creation date: 2024-06-27T18:28:24.527866
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_141T01_9000003174_21480cztM0_level2.evt modeM0/AS1T03_141T01_9000003174_21480cztM0_level2_quad_clean.evt
Size (bytes)495,751,68088,706,880
Size472.8 MB 84.6 MB
Events in quadrant A3,435,227568,948
Events in quadrant B3,587,512581,076
Events in quadrant C3,492,399565,505
Events in quadrant D4,078,900538,663

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140620
B0146450
C0143800
D0159420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6195961.549637%
B61951252.017756%
C61941642.647724%
D61942514.052309%

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 7530 6195 0 0 0.00% 0.00%
B 7530 6195 1 1 0.01% 0.02%
C 7529 6194 0 0 0.00% 0.00%
D 7529 6194 184 184 2.44% 2.97%

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 9545 50.1 888 876 173.0
A 15 174 9305 48.71 888 876 173.0
A 0 226 7754 39.75 888 876 173.0
B 0 230 103459 628.67 882 862 163.2
B 0 190 22322 131.49 882 862 163.2
B 12 111 18527 108.24 882 862 163.2
C 14 238 138085 709.05 853 864 193.5
C 3 233 25570 127.66 853 864 193.5
C 13 61 5998 26.53 853 864 193.5
D 13 153 326383 1572.0 866 843 207.1
D 13 172 229899 1106.09 866 843 207.1
D 7 38 206079 991.07 866 843 207.1

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