ASTROSAT CZTI

Data Quality Report

Orbit 39688

Creation date: 2024-06-27T22:07:45.859172
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_051T01_9000005490_39688cztM0_level2.fits modeM0/AS1A12_051T01_9000005490_39688cztM0_level2_quad_clean.evt
Size (bytes)619,727,04080,107,200
Size591.0 MB 76.4 MB
Events in quadrant A11,514,508282,089
Events in quadrant B2,768,951633,013
Events in quadrant C5,374,260563,535
Events in quadrant D2,854,198560,576

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0379842
B0119051
C0197081
D0123461

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5514370167.120058%
B5514631.142546%
C551459110.718172%
D5514851.541531%

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 7187 5515 3127 3127 43.51% 56.70%
B 7187 5515 45 45 0.63% 0.82%
C 7187 5515 523 523 7.28% 9.48%
D 7187 5515 57 57 0.79% 1.03%

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 15 222 8837211 83363.28 515 502 106.0
A 10 83 377250 3554.15 515 502 106.0
A 15 174 277804 2616.0 515 502 106.0
B 5 255 183879 1532.17 616 599 119.6
B 5 172 74118 614.6 616 599 119.6
B 10 246 48740 402.45 616 599 119.6
C 15 208 1947630 14112.84 587 589 138.0
C 9 187 860959 6236.26 587 589 138.0
C 15 214 226628 1638.41 587 589 138.0
D 13 249 243247 1667.36 603 587 145.5
D 12 233 103648 708.15 603 587 145.5
D 2 250 68416 466.06 603 587 145.5

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