ASTROSAT CZTI

Data Quality Report

Orbit 28648

Creation date: 2024-06-27T19:54:26.910246
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_073T08_9000004112_28648cztM0_level2.evt modeM0/AS1A10_073T08_9000004112_28648cztM0_level2_quad_clean.evt
Size (bytes)173,070,72029,894,400
Size165.1 MB 28.5 MB
Events in quadrant A1,099,410194,357
Events in quadrant B1,136,544198,252
Events in quadrant C1,113,833189,020
Events in quadrant D1,752,301176,495

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043862
B045423
C044771
D066671

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2019964.754829%
B20181105.450942%
C20191396.884596%
D20191949.608717%

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 2989 2020 0 0 0.00% 0.00%
B 2989 2020 0 0 0.00% 0.00%
C 2989 2020 0 0 0.00% 0.00%
D 2989 2020 118 118 3.95% 5.84%

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 13 254 3766 59.28 283 276 58.9
A 8 192 3561 55.8 283 276 58.9
A 3 137 2720 41.52 283 276 58.9
B 4 80 18832 329.46 278 271 56.3
B 10 245 7464 127.68 278 271 56.3
B 0 190 7189 122.79 278 271 56.3
C 14 238 52813 817.48 266 267 64.3
C 14 254 15518 237.26 266 267 64.3
C 0 10 3306 47.28 266 267 64.3
D 1 52 400518 5943.06 269 261 67.3
D 8 195 305387 4530.54 269 261 67.3
D 12 233 10951 158.73 269 261 67.3

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