ASTROSAT CZTI

Data Quality Report

Orbit 20161209_G06_164T01_9000000866_level2

Creation date: 2025-11-08T04:47:40.265493
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_164T01_9000000866cztM0_level2.fits modeM0/AS1G06_164T01_9000000866cztM0_level2_quad_clean.evt
Size (bytes)253,008,000308,067,840
Size241.3 MB 293.8 MB
Events in quadrant A1,495,4301,940,423
Events in quadrant B1,444,6781,883,720
Events in quadrant C1,470,6781,814,891
Events in quadrant D1,274,3501,714,756

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0602220
B0609430
C0587300
D0640800

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05820
B05820
C05820
D05820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A287587692.674039%
B287588132.827039%
C287585051.756033%
D287587272.527992%

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 30228 28759 0 0 0.00% 0.00%
B 30228 28755 0 0 0.00% 0.00%
C 30228 28759 0 0 0.00% 0.00%
D 30228 28757 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 1524 11.59 388 363 100.2
A 14 188 1474 11.09 388 363 100.2
A 14 204 1312 9.47 388 363 100.2
B 2 9 1241 11.61 380 361 75.8
B 14 254 1000 8.43 380 361 75.8
B 12 226 995 8.37 380 361 75.8
C 1 80 1175 7.89 388 360 103.3
C 1 81 1147 7.62 388 360 103.3
C 3 158 999 6.19 388 360 103.3
D 3 14 970 6.42 363 329 99.8
D 4 160 965 6.37 363 329 99.8
D 6 231 934 6.06 363 329 99.8

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