ASTROSAT CZTI

Data Quality Report

Orbit 29092

Creation date: 2024-06-27T20:00:27.597811
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_275T01_9000004180_29092cztM0_level2.evt modeM0/AS1T03_275T01_9000004180_29092cztM0_level2_quad_clean.evt
Size (bytes)620,124,48077,181,120
Size591.4 MB 73.6 MB
Events in quadrant A3,090,035504,196
Events in quadrant B3,301,559507,939
Events in quadrant C3,465,360473,425
Events in quadrant D8,517,390431,446

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129721
B0135281
C0142041
D0295451

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6013560.931315%
B60131141.895892%
C6013921.530018%
D6013109118.144021%

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 7178 6013 0 0 0.00% 0.00%
B 7178 6013 43 43 0.60% 0.72%
C 7178 6013 1 1 0.01% 0.02%
D 7178 6014 1205 1205 16.79% 20.04%

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 11637 68.71 799 787 157.9
A 3 137 6941 38.97 799 787 157.9
A 0 226 6705 37.48 799 787 157.9
B 10 245 98242 671.68 784 768 145.1
B 5 255 49178 333.59 784 768 145.1
B 4 67 24361 162.58 784 768 145.1
C 3 233 412474 2390.38 745 750 172.2
C 14 238 122615 707.52 745 750 172.2
C 2 114 14424 79.39 745 750 172.2
D 8 195 4285705 24924.51 729 712 171.9
D 1 52 1289554 7496.8 729 712 171.9
D 12 233 82671 476.73 729 712 171.9

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