ASTROSAT CZTI

Data Quality Report

Orbit 22872

Creation date: 2024-06-27T18:46:53.385021
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/AS1A07_049T01_9000003380_22872cztM0_level2.evt modeM0/AS1A07_049T01_9000003380_22872cztM0_level2_quad_clean.evt
Size (bytes)479,260,800103,654,080
Size457.1 MB 98.9 MB
Events in quadrant A3,182,420690,494
Events in quadrant B3,202,265698,927
Events in quadrant C3,138,123656,386
Events in quadrant D4,552,924642,547

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133911
B0134341
C0133711
D0180217

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6468881.360544%
B64691171.808626%
C64691001.545834%
D64671141.762796%

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 7469 6470 0 0 0.00% 0.00%
B 7469 6470 0 0 0.00% 0.00%
C 7469 6470 0 0 0.00% 0.00%
D 7469 6470 28 28 0.37% 0.43%

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 10150 56.75 822 806 164.7
A 6 16 9176 50.83 822 806 164.7
A 0 226 6946 37.29 822 806 164.7
B 12 111 18539 113.76 811 792 156.0
B 11 111 16600 101.33 811 792 156.0
B 0 190 15640 95.17 811 792 156.0
C 14 238 123737 681.59 770 777 180.4
C 10 22 5913 28.47 770 777 180.4
C 13 61 5415 25.71 770 777 180.4
D 7 238 1125625 5772.52 791 766 194.9
D 1 52 110184 561.51 791 766 194.9
D 12 233 94751 482.31 791 766 194.9

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