ASTROSAT CZTI

Data Quality Report

Orbit 13976

Creation date: 2024-06-27T16:48:38.203066
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/AS1A04_122T01_9000002064_13976cztM0_level2.evt modeM0/AS1A04_122T01_9000002064_13976cztM0_level2_quad_clean.evt
Size (bytes)2,066,520,960347,800,320
Size1.9 GB 331.7 MB
Events in quadrant A14,683,2052,159,199
Events in quadrant B14,548,0092,317,652
Events in quadrant C14,279,4192,112,498
Events in quadrant D17,155,7411,990,466

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05740
B05740
C05740
D05740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0612914
B0606163
C0594643
D0695773

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A284136972.453102%
B284136362.238412%
C284133841.351494%
D284138973.157006%

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 30629 28418 84 84 0.27% 0.30%
B 30629 28418 66 66 0.22% 0.23%
C 30629 28418 1 1 0.00% 0.00%
D 30629 28418 438 438 1.43% 1.54%

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 8 15 857810 1230.47 3418 3341 694.4
A 14 111 274336 390.24 3418 3341 694.4
A 4 2 260607 370.47 3418 3341 694.4
B 3 64 165069 245.94 3465 3384 657.4
B 0 189 160328 238.73 3465 3384 657.4
B 10 245 135859 201.51 3465 3384 657.4
C 3 233 1222775 1581.73 3338 3350 770.9
C 13 61 24153 26.98 3338 3350 770.9
C 8 128 20631 22.41 3338 3350 770.9
D 13 122 1259607 1511.46 3287 3211 831.2
D 1 52 1217715 1461.06 3287 3211 831.2
D 8 195 443083 529.17 3287 3211 831.2

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