ASTROSAT CZTI

Data Quality Report

Orbit 29981

Creation date: 2024-06-27T20:09:39.493263
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/AS1A10_094T16_9000004304_29981cztM0_level2.evt modeM0/AS1A10_094T16_9000004304_29981cztM0_level2_quad_clean.evt
Size (bytes)557,763,840137,217,600
Size531.9 MB 130.9 MB
Events in quadrant A3,297,007946,432
Events in quadrant B5,792,779929,767
Events in quadrant C3,594,712899,964
Events in quadrant D3,734,903894,101

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142581
B0218911
C0153061
D0155281

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6974530.759966%
B69751231.763441%
C6975781.118280%
D6974520.745627%

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 7569 6975 0 0 0.00% 0.00%
B 7570 6976 8 8 0.11% 0.11%
C 7570 6976 0 0 0.00% 0.00%
D 7569 6975 36 36 0.48% 0.52%

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 13 254 13579 75.88 850 836 167.9
A 8 192 12858 71.59 850 836 167.9
A 3 137 8176 43.71 850 836 167.9
B 6 159 2068091 13021.76 833 813 158.8
B 6 36 264803 1662.87 833 813 158.8
B 0 190 175297 1099.07 833 813 158.8
C 3 233 325967 1747.03 802 805 186.1
C 14 238 130365 696.1 802 805 186.1
C 2 114 16673 85.26 802 805 186.1
D 8 195 265056 1375.9 816 794 192.1
D 12 233 145368 752.74 816 794 192.1
D 7 80 136290 705.47 816 794 192.1

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