ASTROSAT CZTI

Data Quality Report

Orbit 38941

Creation date: 2024-06-27T21:58:26.247114
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/AS1T05_064T01_9000005416_38941cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38941cztM0_level2_quad_clean.evt
Size (bytes)412,289,28086,166,720
Size393.2 MB 82.2 MB
Events in quadrant A3,356,154572,199
Events in quadrant B2,681,759590,987
Events in quadrant C2,375,566600,977
Events in quadrant D6,469,427503,352

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129943
B0111972
C099092
D02270515

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48752825.784615%
B48752204.512821%
C487560.123077%
D487362112.743690%

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 6999 4876 236 236 3.37% 4.84%
B 6999 4876 208 208 2.97% 4.27%
C 6999 4876 2 2 0.03% 0.04%
D 6999 4875 770 770 11.00% 15.79%

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 786516 7294.85 536 527 107.7
A 10 83 388249 3598.49 536 527 107.7
A 13 248 95454 881.03 536 527 107.7
B 5 172 541642 5312.54 537 522 101.9
B 12 111 12388 116.5 537 522 101.9
B 0 230 11404 106.84 537 522 101.9
C 15 214 202396 1577.96 552 557 127.9
C 0 10 13985 104.98 552 557 127.9
C 13 61 3726 24.78 552 557 127.9
D 12 235 2545426 19972.43 524 511 127.4
D 12 227 907454 7117.67 524 511 127.4
D 2 249 292693 2293.04 524 511 127.4

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