ASTROSAT CZTI

Data Quality Report

Orbit 04035

Creation date: 2024-06-27T14:36:35.435718
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_246T03_9000000516_04035cztM0_level2.evt modeM0/AS1G05_246T03_9000000516_04035cztM0_level2_quad_clean.evt
Size (bytes)486,262,08078,482,880
Size463.7 MB 74.8 MB
Events in quadrant A3,549,312489,361
Events in quadrant B3,287,707491,374
Events in quadrant C2,869,720497,824
Events in quadrant D4,580,675446,895

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150572
B0143131
C0132221
D0183171

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64601191.842105%
B6460751.160991%
C6460620.959752%
D64605198.034056%

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 7520 6460 42 42 0.56% 0.65%
B 7520 6460 11 11 0.15% 0.17%
C 7520 6460 0 0 0.00% 0.00%
D 7520 6460 402 402 5.35% 6.22%

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 273666 1822.24 734 716 149.8
A 8 15 258532 1721.2 734 716 149.8
A 0 118 104157 690.58 734 716 149.8
B 10 16 96327 665.23 746 726 143.7
B 15 204 94845 654.92 746 726 143.7
B 5 184 50881 349.0 746 726 143.7
C 9 144 32065 186.04 725 727 168.5
C 13 61 6213 32.57 725 727 168.5
C 12 4 4192 20.57 725 727 168.5
D 13 53 879761 5289.6 691 670 166.2
D 11 132 476974 2865.98 691 670 166.2
D 2 232 386128 2319.35 691 670 166.2

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