ASTROSAT CZTI

Data Quality Report

Orbit 10875

Creation date: 2024-06-27T16:05:01.359480
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/AS1A03_118T01_9000001570_10875cztM0_level2.evt modeM0/AS1A03_118T01_9000001570_10875cztM0_level2_quad_clean.evt
Size (bytes)230,068,80025,407,360
Size219.4 MB 24.2 MB
Events in quadrant A1,654,591141,881
Events in quadrant B2,275,088128,513
Events in quadrant C1,174,874145,177
Events in quadrant D1,657,787139,883

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0624
D0620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0708780
B0900396
C0606064
D0714982

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2988612.041499%
B298835511.880857%
C298650.167448%
D2984591.977212%

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 3018 3017 47 47 1.56% 1.56%
B 3018 3016 273 273 9.05% 9.05%
C 3018 3017 2 2 0.07% 0.07%
D 3018 3017 62 62 2.05% 2.06%

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 343317 5345.62 307 301 64.2
A 8 15 68881 1068.76 307 301 64.2
A 15 223 23653 363.92 307 301 64.2
B 4 239 1081933 18340.58 301 294 59.0
B 0 214 7124 115.81 301 294 59.0
B 12 111 5915 95.31 301 294 59.0
C 14 234 11824 164.1 297 299 70.2
C 13 61 2286 28.29 297 299 70.2
C 8 222 1260 13.68 297 299 70.2
D 1 52 239156 3297.17 292 283 72.4
D 8 195 99139 1364.51 292 283 72.4
D 10 199 65169 895.62 292 283 72.4

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