ASTROSAT CZTI

Data Quality Report

Orbit 28524

Creation date: 2024-06-27T19:52:50.680200
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_058T09_9000004100_28524cztM0_level2.evt modeM0/AS1A10_058T09_9000004100_28524cztM0_level2_quad_clean.evt
Size (bytes)3,047,817,600456,534,720
Size2.8 GB 435.4 MB
Events in quadrant A21,706,7622,861,410
Events in quadrant B20,325,6662,920,194
Events in quadrant C18,192,8332,819,883
Events in quadrant D29,595,7172,693,509

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07460
B07460
C07460
D07460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0886837
B0834047
C0767647
D01124748

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3688513483.654602%
B368867141.935694%
C368865501.491081%
D3688620465.546820%

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 45419 36887 807 807 1.78% 2.19%
B 45420 36889 261 261 0.57% 0.71%
C 45420 36888 1 1 0.00% 0.00%
D 45420 36889 1814 1814 3.99% 4.92%

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 15 174 4361447 4817.35 4488 4387 904.5
A 13 254 66539 68.72 4488 4387 904.5
A 3 137 44255 44.08 4488 4387 904.5
B 10 245 1944389 2262.54 4498 4378 857.4
B 0 230 225376 257.74 4498 4378 857.4
B 4 171 146979 166.31 4498 4378 857.4
C 14 238 696157 684.86 4336 4368 1010.1
C 3 233 547357 537.55 4336 4368 1010.1
C 7 247 55040 50.16 4336 4368 1010.1
D 1 52 6592209 6390.51 4303 4194 1030.9
D 8 195 5615853 5443.42 4303 4194 1030.9
D 2 250 484314 465.73 4303 4194 1030.9

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