ASTROSAT CZTI

Data Quality Report

Orbit 26435

Creation date: 2024-06-27T19:28:59.715099
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/AS1A09_108T02_9000003822_26435cztM0_level2.evt modeM0/AS1A09_108T02_9000003822_26435cztM0_level2_quad_clean.evt
Size (bytes)620,015,040119,122,560
Size591.3 MB 113.6 MB
Events in quadrant A4,030,689767,213
Events in quadrant B4,015,347788,039
Events in quadrant C4,103,547759,895
Events in quadrant D6,072,314723,271

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174310
B0172440
C0174460
D0236890

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81951181.439902%
B81961611.964373%
C81961762.147389%
D81965476.673987%

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 9090 8198 5 5 0.06% 0.06%
B 9091 8199 0 0 0.00% 0.00%
C 9091 8198 1 1 0.01% 0.01%
D 9091 8199 367 367 4.04% 4.48%

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 0 13 98978 475.85 1017 995 205.9
A 13 254 11644 51.72 1017 995 205.9
A 12 189 11136 49.25 1017 995 205.9
B 12 111 24798 120.84 1018 990 197.0
B 11 111 21774 105.49 1018 990 197.0
B 14 111 19535 94.13 1018 990 197.0
C 14 238 153602 657.26 987 992 232.2
C 14 176 55467 234.61 987 992 232.2
C 3 233 37286 156.31 987 992 232.2
D 1 52 1226030 5321.83 967 943 230.2
D 11 176 808251 3506.98 967 943 230.2
D 7 80 288453 1248.96 967 943 230.2

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