ASTROSAT CZTI

Data Quality Report

Orbit 30856

Creation date: 2024-06-27T20:20:26.049817
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/AS1A10_071T46_9000004460_30856cztM0_level2.evt modeM0/AS1A10_071T46_9000004460_30856cztM0_level2_quad_clean.evt
Size (bytes)723,142,08090,849,600
Size689.6 MB 86.6 MB
Events in quadrant A3,181,222609,608
Events in quadrant B10,331,155544,610
Events in quadrant C3,631,125574,498
Events in quadrant D4,307,572557,799

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137061
B0352211
C0150691
D0173101

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6649330.496315%
B6649196529.553316%
C66491822.737254%
D66502553.834586%

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 7674 6649 0 0 0.00% 0.00%
B 7674 6649 1270 1270 16.55% 19.10%
C 7674 6649 47 47 0.61% 0.71%
D 7675 6651 225 225 2.93% 3.38%

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 12797 71.83 824 808 166.9
A 3 137 8269 44.7 824 808 166.9
A 0 226 7024 37.24 824 808 166.9
B 6 36 5352912 36316.41 766 747 147.4
B 6 159 1827294 12393.79 766 747 147.4
B 0 229 27090 178.75 766 747 147.4
C 0 10 222629 1198.78 783 788 185.1
C 2 16 181718 977.71 783 788 185.1
C 14 238 125580 674.35 783 788 185.1
D 8 195 609712 3305.79 778 761 184.2
D 1 52 575451 3119.79 778 761 184.2
D 2 250 91154 490.71 778 761 184.2

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