ASTROSAT CZTI

Data Quality Report

Orbit 27965

Creation date: 2024-06-27T19:46:31.321261
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_021T03_9000004038_27965cztM0_level2.evt modeM0/AS1A10_021T03_9000004038_27965cztM0_level2_quad_clean.evt
Size (bytes)607,680,00087,851,520
Size579.5 MB 83.8 MB
Events in quadrant A3,422,111573,889
Events in quadrant B3,564,914581,642
Events in quadrant C3,507,944560,010
Events in quadrant D7,497,892520,572

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137470
B0143510
C0141580
D0266720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6074991.629898%
B60741081.778070%
C60741332.189661%
D6074111518.356931%

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 7364 6074 0 0 0.00% 0.00%
B 7364 6074 6 6 0.08% 0.10%
C 7364 6074 0 0 0.00% 0.00%
D 7364 6074 945 945 12.83% 15.56%

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 10713 56.19 886 871 175.2
A 0 226 7759 39.33 886 871 175.2
A 3 137 7439 37.5 886 871 175.2
B 10 245 145454 901.99 864 846 160.3
B 12 111 18864 112.39 864 846 160.3
B 0 190 17524 104.03 864 846 160.3
C 14 238 137692 697.76 848 857 196.1
C 3 233 60990 306.64 848 857 196.1
C 13 61 5743 24.92 848 857 196.1
D 1 52 3206699 16611.55 810 791 193.0
D 7 80 732769 3792.78 810 791 193.0
D 2 250 276524 1428.72 810 791 193.0

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