ASTROSAT CZTI

Data Quality Report

Orbit 18907

Creation date: 2024-06-27T17:56:23.747147
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_163T01_9000002820_18907cztM0_level2.evt modeM0/AS1A05_163T01_9000002820_18907cztM0_level2_quad_clean.evt
Size (bytes)1,023,238,08067,769,280
Size975.8 MB 64.6 MB
Events in quadrant A11,091,705274,746
Events in quadrant B11,470,022342,277
Events in quadrant C3,572,557472,063
Events in quadrant D4,368,396458,676

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0378351
B0390021
C0149091
D0175751

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7219325545.089348%
B7219369851.225932%
C72191592.202521%
D72191922.659648%

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 7624 7220 2466 2466 32.35% 34.16%
B 7624 7217 2559 2559 33.57% 35.46%
C 7624 7220 0 0 0.00% 0.00%
D 7624 7220 75 75 0.98% 1.04%

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 14 235 8345656 58216.62 704 690 143.3
A 15 174 21756 146.96 704 690 143.3
A 13 254 8936 57.53 704 690 143.3
B 3 112 8725588 71342.57 630 614 122.3
B 7 220 142687 1161.71 630 614 122.3
B 4 216 73141 593.04 630 614 122.3
C 14 238 131334 643.99 854 860 202.6
C 3 233 99965 489.16 854 860 202.6
C 5 112 10613 48.14 854 860 202.6
D 7 238 546587 2577.91 867 842 211.7
D 1 52 341097 1607.25 867 842 211.7
D 12 1 54392 252.95 867 842 211.7

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