ASTROSAT CZTI

Data Quality Report

Orbit 39523

Creation date: 2024-06-27T22:05:40.548633
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_018T01_9000005488_39523cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39523cztM0_level2_quad_clean.evt
Size (bytes)387,817,92087,572,160
Size369.9 MB 83.5 MB
Events in quadrant A3,913,055583,623
Events in quadrant B2,361,070617,286
Events in quadrant C5,001,096520,516
Events in quadrant D2,648,532542,126

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150233
B0113052
C0186932
D0121342

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55482314.163663%
B5548270.486662%
C554875013.518385%
D5548430.775054%

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 7071 5549 196 196 2.77% 3.53%
B 7071 5549 13 13 0.18% 0.23%
C 7071 5549 698 698 9.87% 12.58%
D 7071 5549 30 30 0.42% 0.54%

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 6 10 741816 6283.83 577 564 118.0
A 15 222 467163 3955.51 577 564 118.0
A 10 83 431865 3656.28 577 564 118.0
B 15 85 58412 517.36 581 565 111.8
B 5 255 16303 140.75 581 565 111.8
B 12 111 14198 121.93 581 565 111.8
C 9 187 2449168 19618.94 538 542 124.8
C 15 214 223680 1787.83 538 542 124.8
C 15 208 217707 1739.97 538 542 124.8
D 13 249 131479 953.06 566 548 137.4
D 2 249 122633 888.67 566 548 137.4
D 12 227 75166 543.15 566 548 137.4

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