ASTROSAT CZTI

Data Quality Report

Orbit 32381

Creation date: 2024-06-27T20:39:33.806917
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_131T01_9000004702_32381cztM0_level2.evt modeM0/AS1A09_131T01_9000004702_32381cztM0_level2_quad_clean.evt
Size (bytes)677,880,000129,231,360
Size646.5 MB 123.2 MB
Events in quadrant A3,073,212933,842
Events in quadrant B7,937,548812,896
Events in quadrant C4,047,850907,179
Events in quadrant D5,069,412844,080

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129502
B0277131
C0161041
D0191581

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5945570.958789%
B5945164127.603028%
C59454737.956266%
D594570711.892347%

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 7300 5946 0 0 0.00% 0.00%
B 7300 5945 1059 1059 14.51% 17.81%
C 7300 5946 93 93 1.27% 1.56%
D 7300 5946 592 592 8.11% 9.96%

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 11210 67.49 790 776 154.6
A 13 6 8989 53.13 790 776 154.6
A 12 96 8579 50.47 790 776 154.6
B 4 80 2290023 17816.2 701 684 128.5
B 6 159 1706178 13272.58 701 684 128.5
B 5 172 1049736 8163.98 701 684 128.5
C 3 233 695858 3988.89 763 770 174.3
C 14 238 181759 1038.64 763 770 174.3
C 14 254 77700 441.48 763 770 174.3
D 12 233 1532359 8824.61 742 724 173.6
D 8 195 363554 2090.47 742 724 173.6
D 1 47 87913 502.34 742 724 173.6

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