ASTROSAT CZTI

Data Quality Report

Orbit 04898

Creation date: 2024-06-27T14:48:36.141281
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/AS1G05_237T01_9000000620_04898cztM0_level2.evt modeM0/AS1G05_237T01_9000000620_04898cztM0_level2_quad_clean.evt
Size (bytes)524,111,04051,871,680
Size499.8 MB 49.5 MB
Events in quadrant A2,305,038364,496
Events in quadrant B2,293,956362,944
Events in quadrant C2,100,085361,817
Events in quadrant D8,869,219165,402

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0982
B0988
C09814
D0988

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010732625
B010633647
C010194610
D0356986673

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4628210.453760%
B4612110.238508%
C461710.021659%
D4016349487.001992%

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 4920 4888 13 13 0.26% 0.27%
B 4920 4880 2 2 0.04% 0.04%
C 4920 4881 0 0 0.00% 0.00%
D 4919 4206 3182 3182 64.69% 75.65%

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 0 50 72864 619.79 556 548 116.7
A 13 14 35498 299.54 556 548 116.7
A 0 31 32116 270.56 556 548 116.7
B 15 204 48271 452.8 544 535 105.4
B 15 54 43495 407.5 544 535 105.4
B 0 219 36136 337.7 544 535 105.4
C 8 128 10376 78.32 529 537 125.6
C 9 202 10057 75.78 529 537 125.6
C 8 112 5661 40.79 529 537 125.6
D 2 63 7352614 117531.57 239 232 62.6
D 2 33 224737 3588.83 239 232 62.6
D 13 53 89602 1428.62 239 232 62.6

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