ASTROSAT CZTI

Data Quality Report

Orbit 39647

Creation date: 2024-06-27T22:07:16.137929
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_39647cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39647cztM0_level2_quad_clean.evt
Size (bytes)451,604,16089,202,240
Size430.7 MB 85.1 MB
Events in quadrant A3,952,824620,698
Events in quadrant B2,803,473633,212
Events in quadrant C4,187,235582,888
Events in quadrant D5,369,512499,736

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149432
B0117451
C0158991
D0195061

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52031412.709975%
B5203661.268499%
C52032394.593504%
D520375014.414761%

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 7056 5204 92 92 1.30% 1.77%
B 7056 5204 42 42 0.60% 0.81%
C 7056 5204 237 237 3.36% 4.55%
D 7056 5204 649 649 9.20% 12.47%

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 953296 8088.8 586 575 117.8
A 10 83 418478 3548.08 586 575 117.8
A 15 174 211541 1791.15 586 575 117.8
B 5 172 339316 3038.15 580 564 111.5
B 4 170 58388 518.6 580 564 111.5
B 0 230 42297 374.29 580 564 111.5
C 9 187 1648492 12607.53 565 568 130.7
C 15 214 214542 1637.02 565 568 130.7
C 15 208 90716 689.68 565 568 130.7
D 12 227 1744210 13108.17 550 534 133.0
D 13 249 569504 4277.26 550 534 133.0
D 13 171 495524 3721.11 550 534 133.0

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