ASTROSAT CZTI

Data Quality Report

Orbit 43750

Creation date: 2024-06-27T22:55:19.809845
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_026T01_9000005904_43750cztM0_level2.fits modeM0/AS1A13_026T01_9000005904_43750cztM0_level2_quad_clean.evt
Size (bytes)1,523,211,840264,199,680
Size1.4 GB 252.0 MB
Events in quadrant A12,613,0831,879,927
Events in quadrant B9,954,9521,887,579
Events in quadrant C12,181,4331,776,371
Events in quadrant D20,421,5881,370,068

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0494583
B0398623
C0464133
D0716943

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A157377524.778547%
B157388645.489897%
C1573811587.357987%
D15737355722.602783%

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 19297 15740 284 284 1.47% 1.80%
B 19298 15741 458 458 2.37% 2.91%
C 19298 15741 844 844 4.37% 5.36%
D 19297 15739 2960 2960 15.34% 18.81%

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 2306800 5940.42 1906 1871 388.0
A 14 63 868924 2234.63 1906 1871 388.0
A 13 248 826586 2125.51 1906 1871 388.0
B 5 235 1563925 4344.92 1876 1827 359.5
B 0 200 324452 897.37 1876 1827 359.5
B 4 80 168953 464.85 1876 1827 359.5
C 15 158 3865620 9196.55 1811 1826 420.1
C 15 157 323029 764.52 1811 1826 420.1
C 15 173 244279 577.08 1811 1826 420.1
D 15 0 5229198 11625.32 1730 1681 449.7
D 1 52 2427654 5395.05 1730 1681 449.7
D 5 235 1313014 2916.23 1730 1681 449.7

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