ASTROSAT CZTI

Data Quality Report

Orbit 26654

Creation date: 2024-06-27T19:31:26.503839
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/AS1A09_145T01_9000003848_26654cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26654cztM0_level2_quad_clean.evt
Size (bytes)608,950,080100,399,680
Size580.7 MB 95.7 MB
Events in quadrant A3,688,579657,778
Events in quadrant B4,428,835640,886
Events in quadrant C3,730,810632,154
Events in quadrant D6,108,709610,713

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154310
B0175000
C0153850
D0230730

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7163390.544465%
B71643314.620324%
C71631221.703197%
D71633334.648890%

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 7588 7164 0 0 0.00% 0.00%
B 7589 7165 230 230 3.03% 3.21%
C 7588 7164 17 17 0.22% 0.24%
D 7588 7164 219 219 2.89% 3.06%

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 0 13 212402 1163.45 898 881 181.8
A 13 254 11894 60.58 898 881 181.8
A 3 137 8098 39.7 898 881 181.8
B 10 245 890419 5282.03 879 859 168.4
B 3 112 31964 184.7 879 859 168.4
B 12 111 19823 112.6 879 859 168.4
C 15 208 147425 719.93 860 866 203.6
C 14 238 135043 659.1 860 866 203.6
C 3 233 47007 226.65 860 866 203.6
D 7 80 2273649 10669.34 856 832 213.0
D 2 250 202477 946.59 856 832 213.0
D 1 52 140870 657.38 856 832 213.0

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