ASTROSAT CZTI

Data Quality Report

Orbit 12691

Creation date: 2024-06-27T16:31:07.089241
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/AS1A04_174T01_9000001876_12691cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12691cztM0_level2_quad_clean.evt
Size (bytes)535,688,640102,222,720
Size510.9 MB 97.5 MB
Events in quadrant A3,345,304694,364
Events in quadrant B5,472,966619,165
Events in quadrant C3,239,512683,258
Events in quadrant D3,725,445646,391

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140343
B0205472
C0137372
D0152232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64851081.665382%
B648586513.338473%
C6485751.156515%
D64851672.575173%

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 7585 6485 4 4 0.05% 0.06%
B 7585 6485 665 665 8.77% 10.25%
C 7585 6485 14 14 0.18% 0.22%
D 7585 6485 84 84 1.11% 1.30%

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 12 189 33334 186.9 847 830 173.9
A 7 16 27822 155.2 847 830 173.9
A 8 15 20919 115.51 847 830 173.9
B 4 239 2142700 14528.22 781 766 147.4
B 11 51 131067 883.8 781 766 147.4
B 3 209 71144 477.36 781 766 147.4
C 15 208 80338 425.1 808 816 187.1
C 14 234 5965 27.53 808 816 187.1
C 13 61 5862 26.97 808 816 187.1
D 1 52 478409 2429.74 811 790 196.6
D 10 157 81936 412.8 811 790 196.6
D 13 104 39903 198.97 811 790 196.6

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