ASTROSAT CZTI

Data Quality Report

Orbit 29697

Creation date: 2024-06-27T20:06:56.776623
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_007T01_9000004276_29697cztM0_level2.evt modeM0/AS1A10_007T01_9000004276_29697cztM0_level2_quad_clean.evt
Size (bytes)1,423,713,600184,089,600
Size1.3 GB 175.6 MB
Events in quadrant A7,778,4051,127,509
Events in quadrant B13,120,0041,134,012
Events in quadrant C8,331,4381,119,313
Events in quadrant D12,795,1531,075,766

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03280
B03280
C03280
D03280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0335113
B0504023
C0343813
D0489503

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A162202341.442663%
B162204442.737361%
C162203151.942047%
D1622110746.621047%

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 18250 16220 16 16 0.09% 0.10%
B 18250 16220 76 76 0.42% 0.47%
C 18250 16220 11 11 0.06% 0.07%
D 18251 16221 817 817 4.48% 5.04%

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 0 13 89113 217.86 1977 1929 400.2
A 12 96 55871 134.79 1977 1929 400.2
A 13 254 33489 78.86 1977 1929 400.2
B 6 159 4683559 12416.82 1952 1900 377.0
B 0 229 520997 1376.76 1952 1900 377.0
B 0 190 92488 240.26 1952 1900 377.0
C 3 233 382082 847.55 1912 1927 448.5
C 14 238 315813 699.8 1912 1927 448.5
C 10 22 85271 185.81 1912 1927 448.5
D 7 80 2865809 6343.76 1896 1844 451.5
D 8 195 1984708 4392.1 1896 1844 451.5
D 2 250 238551 524.31 1896 1844 451.5

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