ASTROSAT CZTI

Data Quality Report

Orbit 45297

Creation date: 2024-06-27T23:12:05.416374
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/AS1A13_073T04_9000006066_45297cztM0_level2.fits modeM0/AS1A13_073T04_9000006066_45297cztM0_level2_quad_clean.evt
Size (bytes)495,976,320110,240,640
Size473.0 MB 105.1 MB
Events in quadrant A5,721,341727,251
Events in quadrant B3,233,297761,683
Events in quadrant C3,617,567723,177
Events in quadrant D5,260,953652,617

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222852
B0143012
C0155922
D0204022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67821832.698319%
B6781550.811090%
C67821652.432911%
D67823895.735771%

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 7817 6782 40 40 0.51% 0.59%
B 7816 6781 21 21 0.27% 0.31%
C 7817 6783 151 151 1.93% 2.23%
D 7817 6782 388 388 4.96% 5.72%

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 10 83 2612853 16974.18 745 729 153.9
A 10 248 206795 1339.06 745 729 153.9
A 0 243 11036 66.98 745 729 153.9
B 5 32 92326 625.22 752 730 146.5
B 0 186 26403 175.24 752 730 146.5
B 0 168 24084 159.41 752 730 146.5
C 14 254 590218 3370.55 743 749 174.9
C 11 16 79621 450.99 743 749 174.9
C 12 2 19805 108.96 743 749 174.9
D 2 249 1583529 8576.46 732 711 184.6
D 1 52 422419 2285.01 732 711 184.6
D 13 171 142417 767.83 732 711 184.6

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