ASTROSAT CZTI

Data Quality Report

Orbit 39997

Creation date: 2024-06-27T22:11:04.127667
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/AS1A12_054T03_9000005516_39997cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_39997cztM0_level2_quad_clean.evt
Size (bytes)313,594,56095,319,360
Size299.1 MB 90.9 MB
Events in quadrant A2,867,121645,146
Events in quadrant B2,763,866668,256
Events in quadrant C2,576,404638,251
Events in quadrant D2,992,016567,332

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117073
B0116772
C0107592
D0127042

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5243200.381461%
B5243741.411406%
C524380.152584%
D52431372.613008%

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 7366 5244 9 9 0.12% 0.17%
B 7366 5244 38 38 0.52% 0.72%
C 7366 5244 7 7 0.10% 0.13%
D 7366 5244 90 90 1.22% 1.72%

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 10 83 462066 3813.71 601 592 121.0
A 13 248 62400 510.79 601 592 121.0
A 12 189 7888 60.3 601 592 121.0
B 4 171 337685 2937.93 601 586 114.7
B 15 85 26020 221.67 601 586 114.7
B 12 111 13686 114.17 601 586 114.7
C 15 214 220617 1608.86 588 594 136.8
C 0 10 35687 256.61 588 594 136.8
C 7 220 12385 86.22 588 594 136.8
D 2 250 305203 2158.61 576 560 141.1
D 12 227 145111 1024.25 576 560 141.1
D 12 233 110039 775.74 576 560 141.1

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