ASTROSAT CZTI

Data Quality Report

Orbit 25637

Creation date: 2024-06-27T19:19:49.428041
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/AS1A09_013T02_9000003734_25637cztM0_level2.evt modeM0/AS1A09_013T02_9000003734_25637cztM0_level2_quad_clean.evt
Size (bytes)484,084,80097,110,720
Size461.7 MB 92.6 MB
Events in quadrant A3,438,306628,433
Events in quadrant B3,426,414640,723
Events in quadrant C3,344,327604,217
Events in quadrant D3,982,878586,982

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142340
B0145080
C0143030
D0162650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6891630.914236%
B68911261.828472%
C68911041.509215%
D68911572.278334%

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 7872 6892 0 0 0.00% 0.00%
B 7872 6892 10 10 0.13% 0.15%
C 7872 6892 3 3 0.04% 0.04%
D 7872 6892 118 118 1.50% 1.71%

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 8 192 170475 1003.08 846 830 169.1
A 13 254 10473 57.02 846 830 169.1
A 3 137 7651 40.33 846 830 169.1
B 3 64 87370 544.38 844 824 159.0
B 3 112 22533 136.55 844 824 159.0
B 12 111 19313 116.3 844 824 159.0
C 14 238 130177 689.38 810 815 187.6
C 3 233 59374 312.07 810 815 187.6
C 13 61 5585 25.42 810 815 187.6
D 1 52 526955 2568.58 804 783 204.8
D 8 195 373744 1820.66 804 783 204.8
D 2 234 23289 109.87 804 783 204.8

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