ASTROSAT CZTI

Data Quality Report

Orbit 08963

Creation date: 2024-06-27T15:39:29.827764
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/AS1A03_051T01_9000001242_08963cztM0_level2.evt modeM0/AS1A03_051T01_9000001242_08963cztM0_level2_quad_clean.evt
Size (bytes)226,722,24050,682,240
Size216.2 MB 48.3 MB
Events in quadrant A1,778,065335,968
Events in quadrant B1,439,860342,526
Events in quadrant C1,736,730327,516
Events in quadrant D1,713,216322,289

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A071261
B061821
C072661
D069121

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A28841525.270458%
B28841023.536755%
C28841685.825243%
D28841354.680999%

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 3559 2885 62 62 1.74% 2.15%
B 3559 2885 0 0 0.00% 0.00%
C 3559 2885 69 69 1.94% 2.39%
D 3559 2884 38 38 1.07% 1.32%

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 5 16 340701 4708.79 345 337 72.3
A 8 5 99438 1371.02 345 337 72.3
A 15 174 4467 57.14 345 337 72.3
B 5 255 31615 456.37 345 338 68.5
B 0 214 21324 306.21 345 338 68.5
B 6 51 18430 263.99 345 338 68.5
C 4 254 445058 5787.09 325 326 76.8
C 14 234 21243 272.18 325 326 76.8
C 4 238 2699 30.88 325 326 76.8
D 8 195 155226 1734.08 331 323 89.3
D 13 104 144775 1617.08 331 323 89.3
D 7 71 47282 525.69 331 323 89.3

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