ASTROSAT CZTI

Data Quality Report

Orbit 48195

Creation date: 2024-08-27T11:42:04.166599
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/AS1A13_037T05_9000006414_48195cztM0_level2.fits modeM0/AS1A13_037T05_9000006414_48195cztM0_level2_quad_clean.evt
Size (bytes)749,727,36073,990,080
Size715.0 MB 70.6 MB
Events in quadrant A7,361,583731,917
Events in quadrant B1,162,71044,012
Events in quadrant C3,030,819723,007
Events in quadrant D15,659,856257,635

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0275221
B072171
C0140501
D0512967

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68542533.691275%
B68556855100.000000%
C6855761.108680%
D6854595986.941932%

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 7664 6854 3 3 0.04% 0.04%
B 7664 6854 1 1 0.01% 0.01%
C 7665 6856 3 3 0.04% 0.04%
D 7663 6853 4864 4864 63.47% 70.98%

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 4080611 25602.99 761 744 159.4
A 10 255 326678 2045.38 761 744 159.4
A 13 254 14152 84.14 761 744 159.4
B 2 177 947923 81375.8 47 45 11.6
B 0 186 11148 953.2 47 45 11.6
B 4 21 10598 905.98 47 45 11.6
C 0 207 32365 176.32 756 757 179.3
C 12 2 19881 106.68 756 757 179.3
C 14 254 16217 86.24 756 757 179.3
D 8 129 13313342 167283.21 307 298 79.6
D 2 165 697549 8761.21 307 298 79.6
D 12 233 160753 2016.18 307 298 79.6

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