ASTROSAT CZTI

Data Quality Report

Orbit 36348

Creation date: 2022-06-19T00:25:23.512384
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/AS1A10_103T02_9000005192_36348cztM0_level2.evt modeM0/AS1A10_103T02_9000005192_36348cztM0_level2_quad_clean.evt
Size (bytes)463,858,56096,721,920
Size442.4 MB 92.2 MB
Events in quadrant A2,655,359674,988
Events in quadrant B3,943,924653,688
Events in quadrant C2,929,502642,677
Events in quadrant D4,174,273601,197

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110833
B0150782
C0118062
D0158742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5083180.354122%
B50833827.515247%
C50831222.400157%
D50833536.944718%

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 7205 5084 14 14 0.19% 0.28%
B 7205 5084 315 315 4.37% 6.20%
C 7205 5084 115 115 1.60% 2.26%
D 7205 5083 375 375 5.20% 7.38%

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 10 83 188101 1525.91 609 600 122.9
A 9 143 75225 607.31 609 600 122.9
A 7 3 25587 203.35 609 600 122.9
B 5 172 717096 6562.42 584 572 109.2
B 5 236 562871 5149.92 584 572 109.2
B 4 171 100911 918.97 584 572 109.2
C 0 10 281584 2138.4 574 577 131.4
C 15 214 216959 1646.62 574 577 131.4
C 0 207 159825 1211.84 574 577 131.4
D 2 249 514196 3790.31 563 550 135.5
D 13 171 410960 3028.51 563 550 135.5
D 12 6 399690 2945.34 563 550 135.5

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