ASTROSAT CZTI

Data Quality Report

Orbit 35035

Creation date: 2022-03-22T18:31:19.912002
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/AS1A10_123T17_9000005018_35035cztM0_level2.evt modeM0/AS1A10_123T17_9000005018_35035cztM0_level2_quad_clean.evt
Size (bytes)95,849,28024,013,440
Size91.4 MB 22.9 MB
Events in quadrant A601,942157,507
Events in quadrant B679,646160,168
Events in quadrant C670,963160,228
Events in quadrant D860,012152,514

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026352
B029321
C027741
D034381

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A128210.078003%
B128290.702028%
C128260.468019%
D1282181.404056%

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 2625 1281 0 0 0.00% 0.00%
B 2625 1281 3 3 0.11% 0.23%
C 2625 1281 6 6 0.23% 0.47%
D 2625 1282 15 15 0.57% 1.17%

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 10 83 32225 1016.05 144 140 31.6
A 13 6 4423 135.63 144 140 31.6
A 10 255 2988 90.19 144 140 31.6
B 0 197 30387 1000.82 145 142 30.2
B 5 172 29601 974.81 145 142 30.2
B 0 199 20592 676.7 145 142 30.2
C 15 214 57516 1625.35 144 145 35.3
C 0 10 37703 1064.04 144 145 35.3
C 15 159 6240 172.67 144 145 35.3
D 8 195 206944 5734.46 141 137 36.1
D 1 47 29966 827.12 141 137 36.1
D 5 223 28152 776.82 141 137 36.1

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