ASTROSAT CZTI

Data Quality Report

Orbit 15358

Creation date: 2024-06-27T17:07:23.942160
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/AS1A04_126T01_9000002262_15358cztM0_level2.evt modeM0/AS1A04_126T01_9000002262_15358cztM0_level2_quad_clean.evt
Size (bytes)454,029,12095,734,080
Size433.0 MB 91.3 MB
Events in quadrant A2,993,209632,176
Events in quadrant B3,839,725627,930
Events in quadrant C2,982,547619,139
Events in quadrant D3,515,134588,860

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128912
B0153311
C0127991
D0146701

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6174500.809848%
B61741682.721088%
C6174210.340136%
D61741562.526725%

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 7475 6176 2 2 0.03% 0.03%
B 7475 6176 111 111 1.48% 1.80%
C 7475 6176 0 0 0.00% 0.00%
D 7475 6176 112 112 1.50% 1.81%

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 9 143 24963 155.68 770 756 155.5
A 0 226 6948 39.82 770 756 155.5
A 15 239 6295 35.62 770 756 155.5
B 10 16 677067 4714.33 762 745 143.5
B 0 190 40508 277.17 762 745 143.5
B 0 189 34108 232.56 762 745 143.5
C 3 233 122547 731.28 732 736 166.6
C 13 61 5426 28.16 732 736 166.6
C 4 238 5183 26.7 732 736 166.6
D 2 33 275336 1548.53 731 711 177.3
D 7 38 142404 798.96 731 711 177.3
D 5 222 115510 647.32 731 711 177.3

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