ASTROSAT CZTI

Data Quality Report

Orbit 20230518_T05_106T01_9000005642_level2

Creation date: 2023-05-20T16:34:56.073639
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/AS1T05_106T01_9000005642cztM0_level2.fits modeM0/AS1T05_106T01_9000005642cztM0_level2_quad_clean.evt
Size (bytes)536,875,200606,052,800
Size512.0 MB 578.0 MB
Events in quadrant A3,179,8743,732,657
Events in quadrant B3,167,6863,897,884
Events in quadrant C3,172,3463,633,146
Events in quadrant D2,526,3862,884,349

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01518570
B01276810
C01354410
D02212540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012560
B012560
C012560
D012560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02380
B02380
C02380
D02380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6132325844.213753%
B613231120.182639%
C6132317072.783621%
D613231030516.804462%

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 85223 61280 0 0 0.00% 0.00%
B 85223 61323 0 0 0.00% 0.00%
C 85222 61092 0 0 0.00% 0.00%
D 85223 61094 0 0 0.00% 0.00%

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 9 19 2549 8.52 829 778 208.0
A 7 110 2546 8.5 829 778 208.0
A 0 29 2431 7.95 829 778 208.0
B 2 9 2669 11.51 837 797 162.7
B 3 80 2275 9.09 837 797 162.7
B 2 8 2238 8.86 837 797 162.7
C 1 81 2579 8.28 839 786 216.6
C 3 203 2477 7.81 839 786 216.6
C 3 202 2475 7.8 839 786 216.6
D 10 189 1961 6.71 724 660 194.0
D 7 3 1868 6.23 724 660 194.0
D 6 67 1864 6.21 724 660 194.0

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