ASTROSAT CZTI

Data Quality Report

Orbit 21517

Creation date: 2024-06-27T18:28:52.329947
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_21517cztM0_level2.evt modeM0/AS1T03_141T01_9000003174_21517cztM0_level2_quad_clean.evt
Size (bytes)463,734,72081,239,040
Size442.3 MB 77.5 MB
Events in quadrant A2,855,219518,562
Events in quadrant B3,079,334528,694
Events in quadrant C2,874,000511,691
Events in quadrant D4,818,877472,715

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125750
B0130800
C0126090
D0184570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6137240.391071%
B6137510.831025%
C6137570.928793%
D61374407.169627%

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 6717 6138 0 0 0.00% 0.00%
B 6717 6138 3 3 0.04% 0.05%
C 6717 6138 1 1 0.01% 0.02%
D 6717 6138 393 393 5.85% 6.40%

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 10396 64.74 740 724 149.4
A 3 137 6463 38.41 740 724 149.4
A 0 226 6447 38.31 740 724 149.4
B 0 230 56408 392.33 738 718 141.9
B 0 189 37947 262.27 738 718 141.9
B 3 64 23068 157.45 738 718 141.9
C 14 238 110829 663.79 707 710 165.9
C 13 61 4836 24.87 707 710 165.9
C 0 239 3424 16.36 707 710 165.9
D 13 174 495910 2947.09 695 673 168.0
D 7 38 426089 2531.59 695 673 168.0
D 13 153 343362 2039.3 695 673 168.0

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