ASTROSAT CZTI

Data Quality Report

Orbit 19813

Creation date: 2024-06-27T18:07:23.951802
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/AS1C04_009T06_9000002960_19813cztM0_level2.evt modeM0/AS1C04_009T06_9000002960_19813cztM0_level2_quad_clean.evt
Size (bytes)463,645,440114,739,200
Size442.2 MB 109.4 MB
Events in quadrant A2,714,100781,972
Events in quadrant B2,973,116792,410
Events in quadrant C2,883,619777,164
Events in quadrant D5,079,828721,024

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120481
B0127841
C0124751
D0190701

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5759470.816114%
B5760771.336806%
C5760891.545139%
D57605369.305556%

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 6934 5759 1 1 0.01% 0.02%
B 6935 5760 21 21 0.30% 0.36%
C 6935 5760 6 6 0.09% 0.10%
D 6934 5759 369 369 5.32% 6.41%

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 5 16 17254 117.88 698 684 140.6
A 6 12 7328 47.27 698 684 140.6
A 0 226 6151 38.89 698 684 140.6
B 0 197 131787 1018.08 699 683 128.8
B 7 220 52014 398.61 699 683 128.8
B 0 228 25899 195.81 699 683 128.8
C 14 238 106051 665.56 684 689 158.3
C 0 207 66364 414.86 684 689 158.3
C 3 233 41654 258.77 684 689 158.3
D 1 52 1333305 8270.73 666 647 161.1
D 12 233 303719 1880.92 666 647 161.1
D 7 38 301564 1867.55 666 647 161.1

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