ASTROSAT CZTI

Data Quality Report

Orbit 35342

Creation date: 2022-04-12T03:09:58.021520
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/AS1A11_093T01_9000005064_35342cztM0_level2.evt modeM0/AS1A11_093T01_9000005064_35342cztM0_level2_quad_clean.evt
Size (bytes)263,387,52046,258,560
Size251.2 MB 44.1 MB
Events in quadrant A1,386,200302,246
Events in quadrant B2,530,677291,387
Events in quadrant C1,669,272307,895
Events in quadrant D2,185,708285,763

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A062172
B096251
C068151
D084541

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2990140.468227%
B299053317.826087%
C2990521.739130%
D29901284.280936%

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 4273 2990 13 13 0.30% 0.43%
B 4274 2990 400 400 9.36% 13.38%
C 4274 2990 44 44 1.03% 1.47%
D 4273 2989 120 120 2.81% 4.01%

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 55851 820.81 330 322 67.7
A 8 192 25134 366.76 330 322 67.7
A 9 143 12147 174.79 330 322 67.7
B 5 172 1301698 22052.77 298 290 59.0
B 4 81 16455 273.92 298 290 59.0
B 3 112 12937 214.31 298 290 59.0
C 15 214 122084 1582.36 327 329 76.9
C 4 254 117847 1527.3 327 329 76.9
C 0 10 105199 1362.92 327 329 76.9
D 8 195 270650 3326.46 323 312 81.3
D 10 118 241615 2969.19 323 312 81.3
D 1 47 224604 2759.87 323 312 81.3

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