ASTROSAT CZTI

Data Quality Report

Orbit 44671

Creation date: 2024-06-27T23:05:07.673222
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_072T01_9000006008_44671cztM0_level2.fits modeM0/AS1A13_072T01_9000006008_44671cztM0_level2_quad_clean.evt
Size (bytes)1,316,211,840281,566,080
Size1.2 GB 268.5 MB
Events in quadrant A15,261,5281,817,739
Events in quadrant B8,845,3671,980,383
Events in quadrant C8,375,6811,874,769
Events in quadrant D14,808,1341,577,023

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0608593
B0393423
C0385643
D0568933

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1850012056.513514%
B185013521.902600%
C185012251.216150%
D1850117619.518404%

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 19955 18504 612 612 3.07% 3.31%
B 19956 18505 67 67 0.34% 0.36%
C 19956 18505 40 40 0.20% 0.22%
D 19956 18505 1297 1297 6.50% 7.01%

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 5018730 12244.43 1990 1946 409.7
A 15 223 2320206 5658.16 1990 1946 409.7
A 7 3 119933 287.97 1990 1946 409.7
B 0 183 154261 386.75 2024 1957 393.8
B 5 171 149625 374.98 2024 1957 393.8
B 5 255 132904 332.52 2024 1957 393.8
C 14 254 163315 347.72 1990 1998 463.9
C 0 207 144992 308.23 1990 1998 463.9
C 3 233 127835 271.25 1990 1998 463.9
D 2 249 2725325 5694.64 1915 1853 478.3
D 13 249 1741733 3638.0 1915 1853 478.3
D 1 52 1553937 3245.33 1915 1853 478.3

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