ASTROSAT CZTI

Data Quality Report

Orbit 12930

Creation date: 2024-06-27T16:34:04.150219
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_115T02_9000001900_12930cztM0_level2.evt modeM0/AS1A04_115T02_9000001900_12930cztM0_level2_quad_clean.evt
Size (bytes)472,239,36065,756,160
Size450.4 MB 62.7 MB
Events in quadrant A3,332,881408,054
Events in quadrant B4,274,299381,161
Events in quadrant C2,617,514413,246
Events in quadrant D3,697,133397,251

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137192
B0163161
C0116091
D0150651

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55892063.685811%
B558979014.134908%
C5589651.162999%
D55893776.745393%

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 5655 5591 12 12 0.21% 0.21%
B 5655 5590 399 399 7.06% 7.14%
C 5655 5591 0 0 0.00% 0.00%
D 5655 5591 212 212 3.75% 3.79%

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 1 162 187612 1323.25 684 668 141.3
A 15 239 111589 785.13 684 668 141.3
A 1 178 103351 726.82 684 668 141.3
B 4 239 1553734 12794.14 636 621 121.4
B 3 64 180579 1482.45 636 621 121.4
B 15 52 23171 185.76 636 621 121.4
C 13 61 5002 27.63 669 672 156.7
C 8 128 3278 16.63 669 672 156.7
C 14 234 2401 11.03 669 672 156.7
D 1 52 1152776 7362.95 650 632 156.5
D 2 234 22658 140.76 650 632 156.5
D 8 195 21664 134.41 650 632 156.5

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