ASTROSAT CZTI

Data Quality Report

Orbit 11684

Creation date: 2024-06-27T16:16:44.410927
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_037T03_9000001722_11684cztM0_level2.evt modeM0/AS1A04_037T03_9000001722_11684cztM0_level2_quad_clean.evt
Size (bytes)684,656,64092,557,440
Size652.9 MB 88.3 MB
Events in quadrant A5,866,316556,307
Events in quadrant B4,152,726576,970
Events in quadrant C3,865,083568,610
Events in quadrant D6,304,208539,919

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229664
B0173773
C0170013
D0245773

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80675997.425313%
B80673614.475022%
C80672252.789141%
D80676838.466592%

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 9018 8071 134 134 1.49% 1.66%
B 9018 8071 4 4 0.04% 0.05%
C 9018 8071 1 1 0.01% 0.01%
D 9018 8071 346 346 3.84% 4.29%

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 8 5 1607434 7864.67 997 972 204.3
A 1 162 163715 796.73 997 972 204.3
A 1 178 88564 428.82 997 972 204.3
B 15 204 68388 344.5 1008 979 195.7
B 3 189 59855 300.89 1008 979 195.7
B 4 239 57241 287.53 1008 979 195.7
C 13 61 7260 27.12 990 993 231.1
C 14 234 3558 11.1 990 993 231.1
C 3 202 2397 6.08 990 993 231.1
D 13 152 1711029 7340.69 963 934 233.0
D 8 195 398181 1705.21 963 934 233.0
D 1 52 393971 1687.14 963 934 233.0

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