ASTROSAT CZTI

Data Quality Report

Orbit 42975

Creation date: 2024-06-27T22:46:27.062209
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_148T01_9000005838_42975cztM0_level2.fits modeM0/AS1T05_148T01_9000005838_42975cztM0_level2_quad_clean.evt
Size (bytes)1,132,830,720303,416,640
Size1.1 GB 289.4 MB
Events in quadrant A9,185,1352,161,734
Events in quadrant B13,772,4711,986,309
Events in quadrant C7,966,1612,098,197
Events in quadrant D9,797,3611,860,132

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0430
C0430
D0430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0374224
B0511514
C0323206
D0397054

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15677630.401863%
B15677200312.776679%
C15676180.114825%
D156765013.195968%

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 19763 15680 42 42 0.21% 0.27%
B 19763 15680 1483 1483 7.50% 9.46%
C 19762 15678 13 13 0.07% 0.08%
D 19762 15679 436 436 2.21% 2.78%

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 1523199 3607.47 1915 1886 421.7
A 15 237 195643 459.45 1915 1886 421.7
A 15 222 50612 115.54 1915 1886 421.7
B 4 81 4749858 12564.17 1804 1761 377.9
B 4 171 1119051 2956.52 1804 1761 377.9
B 0 186 686173 1811.06 1804 1761 377.9
C 15 214 629889 1343.51 1860 1873 467.4
C 14 254 72441 150.97 1860 1873 467.4
C 15 111 17461 33.35 1860 1873 467.4
D 1 47 756454 1575.11 1823 1763 479.1
D 13 249 723679 1506.71 1823 1763 479.1
D 12 16 297091 616.38 1823 1763 479.1

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