ASTROSAT CZTI

Data Quality Report

Orbit 28765

Creation date: 2024-06-27T19:56:01.421481
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/AS1A10_093T01_9000004128_28765cztM0_level2.evt modeM0/AS1A10_093T01_9000004128_28765cztM0_level2_quad_clean.evt
Size (bytes)634,000,32099,123,840
Size604.6 MB 94.5 MB
Events in quadrant A3,513,003661,596
Events in quadrant B3,939,136667,283
Events in quadrant C4,288,618604,229
Events in quadrant D6,971,016566,028

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148633
B0161213
C0171903
D0256323

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72121351.871880%
B72122112.925679%
C72115117.086396%
D721173410.178893%

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 7727 7212 0 0 0.00% 0.00%
B 7727 7212 44 44 0.57% 0.61%
C 7726 7211 7 7 0.09% 0.10%
D 7726 7211 581 581 7.52% 8.06%

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 14 239 18201 95.09 902 880 182.2
A 13 254 12815 65.52 902 880 182.2
A 15 174 9356 46.53 902 880 182.2
B 5 255 169444 996.99 889 866 169.1
B 5 172 124398 730.58 889 866 169.1
B 0 229 53084 308.82 889 866 169.1
C 3 233 586145 3010.99 834 836 194.4
C 14 238 227607 1166.57 834 836 194.4
C 14 254 132940 679.58 834 836 194.4
D 1 52 2339274 11774.33 835 813 198.6
D 8 195 1301667 6549.9 835 813 198.6
D 7 238 80590 401.68 835 813 198.6

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