ASTROSAT CZTI

Data Quality Report

Orbit 28791

Creation date: 2024-06-27T19:56:23.056977
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_103T01_9000004132_28791cztM0_level2.evt modeM0/AS1A10_103T01_9000004132_28791cztM0_level2_quad_clean.evt
Size (bytes)577,609,92087,603,840
Size550.9 MB 83.5 MB
Events in quadrant A2,942,655579,981
Events in quadrant B3,324,787592,506
Events in quadrant C5,246,331556,541
Events in quadrant D5,603,852535,039

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118241
B0131141
C0197511
D0206323

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5558400.719683%
B55591252.248606%
C55595259.444145%
D55584498.078445%

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 6908 5559 0 0 0.00% 0.00%
B 6909 5559 38 38 0.55% 0.68%
C 6909 5559 95 95 1.38% 1.71%
D 6908 5559 412 412 5.96% 7.41%

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 14 235 19092 123.31 747 733 148.9
A 15 174 18594 119.97 747 733 148.9
A 13 254 10436 65.17 747 733 148.9
B 10 245 186302 1363.17 743 726 136.1
B 10 246 79105 575.74 743 726 136.1
B 5 255 62209 451.63 743 726 136.1
C 3 233 2223524 13315.15 723 731 166.9
C 14 238 143537 855.45 723 731 166.9
C 14 254 39306 231.08 723 731 166.9
D 1 52 1568643 9104.22 723 705 172.2
D 8 195 663012 3845.68 723 705 172.2
D 13 104 561993 3259.11 723 705 172.2

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