ASTROSAT CZTI

Data Quality Report

Orbit 46135

Creation date: 2024-06-27T23:19:31.288688
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/AS1A13_098T02_9000006174_46135cztM0_level2.fits modeM0/AS1A13_098T02_9000006174_46135cztM0_level2_quad_clean.evt
Size (bytes)1,649,545,920296,449,920
Size1.5 GB 282.7 MB
Events in quadrant A17,766,8061,966,674
Events in quadrant B11,532,7332,023,463
Events in quadrant C9,279,7522,045,259
Events in quadrant D20,964,1761,584,892

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0643414
B0472105
C0415562
D0759052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03980
B03980
C03980
D03980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A196598084.110077%
B1965812056.129820%
C196614022.044657%
D19661334917.033722%

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 20660 19662 9 9 0.04% 0.05%
B 20660 19662 352 352 1.70% 1.79%
C 20661 19663 38 38 0.18% 0.19%
D 20661 19663 2169 2169 10.50% 11.03%

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 8271710 17710.13 2235 2180 466.9
A 9 191 782232 1670.57 2235 2180 466.9
A 2 79 27148 53.47 2235 2180 466.9
B 15 201 853237 1933.42 2226 2152 440.2
B 5 32 659508 1493.32 2226 2152 440.2
B 5 172 290559 655.18 2226 2152 440.2
C 12 2 351378 669.55 2226 2238 521.5
C 2 14 125114 235.64 2226 2238 521.5
C 3 233 75739 140.95 2226 2238 521.5
D 1 52 5119519 9766.14 2090 2026 524.0
D 5 235 2332397 4447.24 2090 2026 524.0
D 2 249 1700533 3241.4 2090 2026 524.0

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