ASTROSAT CZTI

Data Quality Report

Orbit 48373

Creation date: 2024-09-07T16:22:14.020160
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_029T01_9000006426_48373cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48373cztM0_level2_quad_clean.evt
Size (bytes)1,498,677,120269,023,680
Size1.4 GB 256.6 MB
Events in quadrant A18,673,4521,868,425
Events in quadrant B16,438,7781,575,601
Events in quadrant C8,732,0461,860,064
Events in quadrant D10,256,3041,613,814

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0684474
B0613824
C0391375
D0436964

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03640
B03640
C03640
D03640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A178006773.803371%
B17800395422.213483%
C178004162.337079%
D1780010986.168539%

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 21776 17801 180 180 0.83% 1.01%
B 21776 17801 2534 2534 11.64% 14.24%
C 21776 17800 284 284 1.30% 1.60%
D 21776 17802 966 966 4.44% 5.43%

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 10687376 26207.77 1973 1932 407.7
A 13 248 348589 850.23 1973 1932 407.7
A 13 254 34486 79.84 1973 1932 407.7
B 12 16 7864554 23410.03 1708 1653 335.9
B 5 255 815706 2423.66 1708 1653 335.9
B 4 21 489057 1451.14 1708 1653 335.9
C 12 2 1074494 2328.45 1949 1963 460.6
C 14 254 33372 68.19 1949 1963 460.6
C 15 208 21316 42.02 1949 1963 460.6
D 2 165 2350003 4892.84 1914 1854 479.9
D 7 38 193419 399.16 1914 1854 479.9
D 2 249 157618 324.57 1914 1854 479.9

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