ASTROSAT CZTI

Data Quality Report

Orbit 39180

Creation date: 2024-06-27T22:01:26.858297
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_054T02_9000005444_39180cztM0_level2.fits modeM0/AS1A12_054T02_9000005444_39180cztM0_level2_quad_clean.evt
Size (bytes)1,163,957,760224,023,680
Size1.1 GB 213.6 MB
Events in quadrant A7,207,5931,578,906
Events in quadrant B6,444,1041,605,609
Events in quadrant C6,849,1621,523,436
Events in quadrant D21,452,3731,063,332

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0530
C0530
D0530

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0309633
B0299083
C0301673
D0739123

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03040
B03040
C03040
D03040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14637380.259616%
B14637380.259616%
C14637470.321104%
D14637413628.257157%

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 18726 14640 11 11 0.06% 0.08%
B 18726 14640 15 15 0.08% 0.10%
C 18726 14640 31 31 0.17% 0.21%
D 18726 14640 3446 3446 18.40% 23.54%

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 10 83 954423 3005.25 1581 1550 317.1
A 13 248 68395 210.82 1581 1550 317.1
A 2 79 61984 190.6 1581 1550 317.1
B 5 184 171466 565.62 1564 1519 300.5
B 5 172 73573 239.81 1564 1519 300.5
B 0 213 47159 151.9 1564 1519 300.5
C 15 214 601078 1688.27 1527 1533 355.1
C 9 187 289230 810.13 1527 1533 355.1
C 13 61 10385 24.93 1527 1533 355.1
D 12 235 14755653 44065.99 1373 1333 334.8
D 2 249 711971 2122.43 1373 1333 334.8
D 12 233 164780 488.16 1373 1333 334.8

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