ASTROSAT CZTI

Data Quality Report

Orbit 27632

Creation date: 2024-06-27T19:42:23.201801
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_257T01_9000003976_27632cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27632cztM0_level2_quad_clean.evt
Size (bytes)490,374,72097,024,320
Size467.7 MB 92.5 MB
Events in quadrant A3,167,488640,447
Events in quadrant B3,489,117667,947
Events in quadrant C3,349,844620,096
Events in quadrant D4,428,088581,073

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130920
B0141370
C0136580
D0172190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6138200.325839%
B6138560.912349%
C6138901.466276%
D61381652.688172%

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 7532 6137 3 3 0.04% 0.05%
B 7532 6137 28 28 0.37% 0.46%
C 7532 6137 14 14 0.19% 0.23%
D 7533 6138 153 153 2.03% 2.49%

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 12479 71.57 818 802 163.2
A 13 254 10904 61.91 818 802 163.2
A 3 137 7139 38.84 818 802 163.2
B 10 245 109436 709.53 826 806 153.1
B 3 64 55607 357.94 826 806 153.1
B 0 230 41258 264.22 826 806 153.1
C 14 238 130699 711.33 791 798 182.6
C 2 16 105274 572.1 791 798 182.6
C 3 233 19953 104.89 791 798 182.6
D 1 52 721845 3933.34 778 759 183.3
D 7 80 620895 3382.68 778 759 183.3
D 2 250 68657 370.37 778 759 183.3

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