ASTROSAT CZTI

Data Quality Report

Orbit 11663

Creation date: 2024-06-27T16:16:36.506137
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/AS1A04_037T02_9000001718_11663cztM0_level2.evt modeM0/AS1A04_037T02_9000001718_11663cztM0_level2_quad_clean.evt
Size (bytes)72,849,60018,077,760
Size69.5 MB 17.2 MB
Events in quadrant A825,742115,490
Events in quadrant B460,871124,661
Events in quadrant C428,190121,910
Events in quadrant D429,056116,677

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030741
B018641
C017861
D018111

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A869637.249712%
B86930.345224%
C86920.230150%
D86920.230150%

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 870 870 46 46 5.29% 5.29%
B 870 870 0 0 0.00% 0.00%
C 870 870 0 0 0.00% 0.00%
D 870 870 1 1 0.11% 0.11%

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 8 5 367895 15420.57 107 105 23.9
A 1 162 16928 705.35 107 105 23.9
A 1 178 9646 400.03 107 105 23.9
B 0 244 6571 271.87 112 110 23.8
B 0 214 6425 265.72 112 110 23.8
B 4 239 4436 182.03 112 110 23.8
C 13 61 828 26.48 109 109 27.2
C 12 4 510 14.77 109 109 27.2
C 14 67 312 7.48 109 109 27.2
D 8 195 11128 410.75 106 103 26.8
D 13 104 7945 292.16 106 103 26.8
D 10 157 4110 149.29 106 103 26.8

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