ASTROSAT CZTI

Data Quality Report

Orbit 12647

Creation date: 2024-06-27T16:30:28.448975
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/AS1A04_174T01_9000001876_12647cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12647cztM0_level2_quad_clean.evt
Size (bytes)147,522,24029,007,360
Size140.7 MB 27.7 MB
Events in quadrant A900,712194,116
Events in quadrant B1,118,151194,474
Events in quadrant C935,657193,116
Events in quadrant D1,400,910177,138

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037072
B045071
C037821
D053271

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1611442.731223%
B1611764.717567%
C1611311.924271%
D16111267.821229%

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 2692 1612 0 0 0.00% 0.00%
B 2692 1612 25 25 0.93% 1.55%
C 2692 1612 1 1 0.04% 0.06%
D 2691 1611 73 73 2.71% 4.53%

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 12 189 3318 63.37 232 229 48.7
A 13 248 2370 43.92 232 229 48.7
A 0 226 2002 36.37 232 229 48.7
B 4 239 146810 3231.88 227 222 45.4
B 11 51 44874 984.46 227 222 45.4
B 3 64 18978 413.52 227 222 45.4
C 15 208 67601 1269.78 221 223 53.1
C 7 238 2772 48.04 221 223 53.1
C 13 61 1571 25.4 221 223 53.1
D 1 52 477969 9013.04 218 213 53.0
D 10 157 74809 1407.28 218 213 53.0
D 13 249 9455 174.35 218 213 53.0

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