ASTROSAT CZTI

Data Quality Report

Orbit 20170206_G06_151T02_9000001010_level2

Creation date: 2025-11-09T12:20:58.350475
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/AS1G06_151T02_9000001010cztM0_level2.fits modeM0/AS1G06_151T02_9000001010cztM0_level2_quad_clean.evt
Size (bytes)234,613,440229,610,880
Size223.7 MB 219.0 MB
Events in quadrant A1,347,8821,314,342
Events in quadrant B1,373,5641,353,824
Events in quadrant C1,405,9801,311,611
Events in quadrant D1,199,2841,196,088

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0678290
B0544590
C0540140
D0602380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05360
B05340
C05260
D05240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2584516566.407429%
B257903521.364870%
C258722360.912183%
D257985322.062175%

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 38879 26233 0 0 0.00% 0.00%
B 38885 26180 0 0 0.00% 0.00%
C 38882 26309 0 0 0.00% 0.00%
D 38886 26171 0 0 0.00% 0.00%

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 29 1326 10.91 350 326 91.6
A 7 110 1124 8.71 350 326 91.6
A 0 30 1009 7.45 350 326 91.6
B 2 9 1179 11.14 361 343 75.0
B 5 128 954 8.14 361 343 75.0
B 14 254 949 8.08 361 343 75.0
C 1 80 1069 7.21 371 343 100.7
C 1 81 1027 6.79 371 343 100.7
C 12 241 983 6.35 371 343 100.7
D 15 47 909 6.36 341 310 94.2
D 3 14 908 6.35 341 310 94.2
D 6 231 908 6.35 341 310 94.2

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