ASTROSAT CZTI

Data Quality Report

Orbit 17750

Creation date: 2024-06-27T17:40:28.408708
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/AS1T03_070T06_9000002642_17750cztM0_level2.evt modeM0/AS1T03_070T06_9000002642_17750cztM0_level2_quad_clean.evt
Size (bytes)206,182,08023,244,480
Size196.6 MB 22.2 MB
Events in quadrant A1,474,433122,585
Events in quadrant B1,513,188125,701
Events in quadrant C1,546,310120,513
Events in quadrant D1,503,545120,105

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A064031
B064342
C064551
D065291

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A30132127.036177%
B30122327.702523%
C30122036.739708%
D30121424.714475%

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 3068 3014 0 0 0.00% 0.00%
B 3067 3013 0 0 0.00% 0.00%
C 3067 3013 0 0 0.00% 0.00%
D 3067 3013 2 2 0.07% 0.07%

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 0 226 3188 35.28 382 373 79.8
A 3 137 3181 35.2 382 373 79.8
A 12 194 2831 30.81 382 373 79.8
B 12 111 9339 115.2 386 373 77.8
B 11 111 8316 102.06 386 373 77.8
B 14 111 7021 85.42 386 373 77.8
C 14 238 55430 619.21 372 373 88.9
C 5 218 21810 241.1 372 373 88.9
C 5 219 7962 85.35 372 373 88.9
D 5 222 48560 521.6 376 364 92.4
D 7 238 22326 237.68 376 364 92.4
D 2 234 11721 122.91 376 364 92.4

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