ASTROSAT CZTI

Data Quality Report

Orbit 36357

Creation date: 2022-06-22T13:59:48.491885
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_097T17_9000005194_36357cztM0_level2.evt modeM0/AS1A11_097T17_9000005194_36357cztM0_level2_quad_clean.evt
Size (bytes)513,832,32086,232,960
Size490.0 MB 82.2 MB
Events in quadrant A3,037,363552,206
Events in quadrant B3,941,747551,535
Events in quadrant C3,313,535555,403
Events in quadrant D4,846,507517,606

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129993
B0157932
C0136075
D0186132

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6230120.192616%
B62302944.719101%
C6228651.043674%
D62303615.794543%

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 9336 6232 1 1 0.01% 0.02%
B 9336 6232 238 238 2.55% 3.82%
C 9336 6231 58 58 0.62% 0.93%
D 9336 6231 363 363 3.89% 5.83%

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 200829 1368.25 717 702 146.3
A 12 189 41401 278.26 717 702 146.3
A 9 143 16726 109.55 717 702 146.3
B 5 236 679028 5024.37 697 678 135.0
B 5 172 381618 2821.53 697 678 135.0
B 5 255 29567 213.97 697 678 135.0
C 15 214 263160 1614.23 695 701 162.6
C 0 10 245269 1504.2 695 701 162.6
C 0 207 98990 604.52 695 701 162.6
D 13 171 576975 3396.7 686 667 169.7
D 12 6 492095 2896.43 686 667 169.7
D 2 249 409843 2411.64 686 667 169.7

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