ASTROSAT CZTI

Data Quality Report

Orbit 41619

Creation date: 2024-06-27T22:30:47.175858
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_035T02_9000005680_41619cztM0_level2.fits modeM0/AS1A12_035T02_9000005680_41619cztM0_level2_quad_clean.evt
Size (bytes)509,544,00084,317,760
Size485.9 MB 80.4 MB
Events in quadrant A2,900,097654,046
Events in quadrant B3,036,435656,791
Events in quadrant C3,035,451593,380
Events in quadrant D9,499,949297,757

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116492
B0121382
C0118602
D0316332

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5011190.379166%
B50101502.994012%
C50102094.171657%
D5010261752.235529%

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 7073 5012 4 4 0.06% 0.08%
B 7072 5011 85 85 1.20% 1.70%
C 7072 5011 192 192 2.71% 3.83%
D 7072 5011 2489 2489 35.20% 49.67%

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 522388 4271.47 606 599 122.2
A 13 248 14293 112.1 606 599 122.2
A 13 6 9459 72.53 606 599 122.2
B 0 186 423642 3755.38 600 586 112.7
B 5 255 158506 1401.82 600 586 112.7
B 0 245 41963 367.29 600 586 112.7
C 0 10 530694 4062.0 566 571 130.5
C 15 214 215716 1648.52 566 571 130.5
C 0 15 56805 430.89 566 571 130.5
D 12 79 6965913 62766.18 452 439 111.0
D 2 120 313427 2820.35 452 439 111.0
D 13 249 265961 2392.63 452 439 111.0

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