ASTROSAT CZTI

Data Quality Report

Orbit 41055

Creation date: 2024-06-27T22:23:52.846336
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/AS1A12_006T09_9000005592_41055cztM0_level2.fits modeM0/AS1A12_006T09_9000005592_41055cztM0_level2_quad_clean.evt
Size (bytes)87,742,08023,955,840
Size83.7 MB 22.8 MB
Events in quadrant A811,585164,348
Events in quadrant B717,087167,095
Events in quadrant C769,541153,362
Events in quadrant D844,994142,790

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032002
B029261
C030131
D033461

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A130840.305810%
B1308110.840979%
C1308372.828746%
D1308544.128440%

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 3434 1309 2 2 0.06% 0.15%
B 3434 1309 5 5 0.15% 0.38%
C 3434 1309 35 35 1.02% 2.67%
D 3434 1309 45 45 1.31% 3.44%

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 187714 5521.41 160 157 34.0
A 13 254 2440 67.21 160 157 34.0
A 12 189 1917 51.81 160 157 34.0
B 0 186 34098 1065.15 157 153 31.9
B 0 190 32546 1016.45 157 153 31.9
B 0 189 9636 297.57 157 153 31.9
C 0 10 97658 2667.77 150 150 36.6
C 15 214 63014 1719.93 150 150 36.6
C 14 254 23733 645.22 150 150 36.6
D 13 249 190211 4868.88 152 147 39.0
D 12 233 29781 759.14 152 147 39.0
D 13 171 15143 384.15 152 147 39.0

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