ASTROSAT CZTI

Data Quality Report

Orbit 07897

Creation date: 2024-06-27T15:25:24.139245
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/AS1A02_158T01_9000001080_07897cztM0_level2.evt modeM0/AS1A02_158T01_9000001080_07897cztM0_level2_quad_clean.evt
Size (bytes)875,459,520124,591,680
Size834.9 MB 118.8 MB
Events in quadrant A4,625,085809,493
Events in quadrant B4,813,686822,297
Events in quadrant C5,832,455810,176
Events in quadrant D10,556,568628,510

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02080
B02080
C02080
D02080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208033
B0211002
C0241002
D0384832

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A101231181.165662%
B101231161.145905%
C101231741.718858%
D10123253725.061741%

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 11783 10125 10 10 0.08% 0.10%
B 11783 10125 7 7 0.06% 0.07%
C 11783 10125 31 31 0.26% 0.31%
D 11783 10125 2401 2401 20.38% 23.71%

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 15 234 33670 134.5 1183 1159 241.7
A 15 239 14245 54.14 1183 1159 241.7
A 8 15 11219 41.62 1183 1159 241.7
B 4 81 73499 316.09 1194 1163 228.8
B 0 213 30872 129.82 1194 1163 228.8
B 4 239 25420 106.0 1194 1163 228.8
C 1 16 1240732 4656.27 1155 1163 266.2
C 14 67 45486 166.49 1155 1163 266.2
C 9 68 40259 146.86 1155 1163 266.2
D 1 20 6606601 26853.28 1009 978 246.0
D 1 52 41507 164.76 1009 978 246.0
D 2 234 31677 124.8 1009 978 246.0

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