ASTROSAT CZTI

Data Quality Report

Orbit 41687

Creation date: 2024-06-27T22:31:31.211713
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_044T21_9000005688_41687cztM0_level2.fits modeM0/AS1A12_044T21_9000005688_41687cztM0_level2_quad_clean.evt
Size (bytes)351,648,00092,499,840
Size335.4 MB 88.2 MB
Events in quadrant A3,100,803628,013
Events in quadrant B2,625,976648,966
Events in quadrant C2,890,358604,451
Events in quadrant D3,954,517520,040

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126232
B0116872
C0121652
D0157112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5714220.385019%
B5714110.192510%
C5713761.330299%
D57134798.384386%

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 7386 5715 11 11 0.15% 0.19%
B 7386 5715 3 3 0.04% 0.05%
C 7385 5714 69 69 0.93% 1.21%
D 7385 5714 429 429 5.81% 7.51%

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 540839 4054.13 644 629 133.2
A 13 248 54890 407.21 644 629 133.2
A 2 79 12710 90.66 644 629 133.2
B 5 255 73439 583.62 635 616 124.8
B 5 185 19377 150.35 635 616 124.8
B 12 111 15964 123.0 635 616 124.8
C 0 10 236108 1624.69 620 623 144.9
C 15 214 234345 1612.52 620 623 144.9
C 13 61 4048 23.63 620 623 144.9
D 2 120 1015775 6831.55 604 587 148.6
D 2 249 220710 1481.28 604 587 148.6
D 2 96 202967 1361.88 604 587 148.6

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