ASTROSAT CZTI

Data Quality Report

Orbit 34555

Creation date: 2022-02-17T22:32:59.355565
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/AS1A05_097T01_9000004936_34555cztM0_level2.evt modeM0/AS1A05_097T01_9000004936_34555cztM0_level2_quad_clean.evt
Size (bytes)745,444,80077,832,000
Size710.9 MB 74.2 MB
Events in quadrant A4,102,924470,363
Events in quadrant B5,262,064453,111
Events in quadrant C4,371,669467,290
Events in quadrant D8,319,667430,049

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164601
B0201621
C0174701
D0305091

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7710230.298314%
B77103434.448768%
C7710160.207523%
D77103294.267185%

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 9773 7711 11 11 0.11% 0.14%
B 9773 7711 216 216 2.21% 2.80%
C 9773 7711 11 11 0.11% 0.14%
D 9773 7711 256 256 2.62% 3.32%

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 9 143 90657 443.2 1025 1007 202.3
A 10 83 38047 183.11 1025 1007 202.3
A 13 6 13425 61.39 1025 1007 202.3
B 5 172 1106238 6004.2 991 969 184.1
B 0 245 70637 378.46 991 969 184.1
B 4 232 69114 370.19 991 969 184.1
C 15 214 321694 1405.28 992 1002 228.2
C 14 67 113411 492.58 992 1002 228.2
C 0 10 49221 211.3 992 1002 228.2
D 8 195 3044526 12570.18 987 964 242.1
D 2 250 467886 1928.43 987 964 242.1
D 1 47 289096 1190.01 987 964 242.1

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