ASTROSAT CZTI

Data Quality Report

Orbit 12331

Creation date: 2024-06-27T16:25:34.658117
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_048T01_9000001820_12331cztM0_level2.evt modeM0/AS1A04_048T01_9000001820_12331cztM0_level2_quad_clean.evt
Size (bytes)478,339,20079,583,040
Size456.2 MB 75.9 MB
Events in quadrant A3,242,474508,819
Events in quadrant B4,290,848484,239
Events in quadrant C3,313,640524,262
Events in quadrant D3,254,034495,335

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132614
B0162702
C0133432
D0133122

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5668661.164432%
B566871212.561750%
C56681662.928723%
D56681272.240649%

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 6960 5672 1 1 0.01% 0.02%
B 6960 5672 505 505 7.26% 8.90%
C 6960 5672 108 108 1.55% 1.90%
D 6960 5672 76 76 1.09% 1.34%

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 1 162 155200 1089.31 703 690 141.8
A 13 251 146492 1027.92 703 690 141.8
A 1 178 82590 577.4 703 690 141.8
B 0 85 1400909 11442.76 658 645 122.4
B 4 239 234122 1907.94 658 645 122.4
B 3 64 20008 158.23 658 645 122.4
C 4 254 324323 2011.41 698 702 160.9
C 15 208 255179 1581.66 698 702 160.9
C 13 61 5079 27.2 698 702 160.9
D 14 34 218636 1316.51 692 673 165.6
D 1 52 90577 543.03 692 673 165.6
D 10 253 83896 502.67 692 673 165.6

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