ASTROSAT CZTI

Data Quality Report

Orbit 38609

Creation date: 2024-06-27T21:54:04.625809
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_052T04_9000005388_38609cztM0_level2.fits modeM0/AS1A12_052T04_9000005388_38609cztM0_level2_quad_clean.evt
Size (bytes)454,504,32092,856,960
Size433.4 MB 88.6 MB
Events in quadrant A3,237,860656,802
Events in quadrant B3,462,194657,353
Events in quadrant C2,840,065642,617
Events in quadrant D6,868,488480,121

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128833
B0136812
C0116012
D0240932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5349400.747803%
B53491713.196859%
C5349260.486072%
D5349123423.069733%

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 7351 5349 34 34 0.46% 0.64%
B 7351 5349 131 131 1.78% 2.45%
C 7351 5349 25 25 0.34% 0.47%
D 7351 5350 1324 1324 18.01% 24.75%

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 441834 3478.11 622 611 126.9
A 13 248 330079 2597.16 622 611 126.9
A 9 254 30011 231.76 622 611 126.9
B 0 183 428155 3687.58 609 593 115.9
B 5 184 388772 3347.92 609 593 115.9
B 0 186 46765 398.22 609 593 115.9
C 15 214 223265 1605.37 599 603 138.7
C 14 254 180521 1297.19 599 603 138.7
C 0 10 40019 284.18 599 603 138.7
D 12 227 2188217 16088.8 557 541 136.0
D 12 235 1123056 8255.3 557 541 136.0
D 13 249 335785 2465.48 557 541 136.0

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