ASTROSAT CZTI

Data Quality Report

Orbit 14685

Creation date: 2024-06-27T16:58:26.786365
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_101T01_9000002170_14685cztM0_level2.evt modeM0/AS1A04_101T01_9000002170_14685cztM0_level2_quad_clean.evt
Size (bytes)1,426,354,560226,676,160
Size1.3 GB 216.2 MB
Events in quadrant A10,215,0751,408,719
Events in quadrant B10,293,1411,381,460
Events in quadrant C11,064,5751,391,896
Events in quadrant D10,336,4601,368,667

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03900
B03900
C03900
D03900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0418835
B0427094
C0447904
D0440994

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A190771820.954028%
B190775883.082246%
C190771430.749594%
D190772751.441526%

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 21438 19079 6 6 0.03% 0.03%
B 21438 19078 318 318 1.48% 1.67%
C 21438 19078 0 0 0.00% 0.00%
D 21438 19080 186 186 0.87% 0.97%

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 1200105 2554.02 2311 2260 469.0
A 12 189 61905 127.17 2311 2260 469.0
A 9 143 24397 47.2 2311 2260 469.0
B 10 16 1219634 2791.96 2273 2213 436.0
B 12 111 52675 115.73 2273 2213 436.0
B 11 111 44864 97.81 2273 2213 436.0
C 3 233 2349018 4548.63 2229 2240 515.9
C 13 61 16376 27.4 2229 2240 515.9
C 3 234 13083 21.02 2229 2240 515.9
D 12 110 1302141 2249.05 2222 2169 578.0
D 5 222 318250 546.84 2222 2169 578.0
D 10 199 95344 161.2 2222 2169 578.0

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