ASTROSAT CZTI

Data Quality Report

Orbit 33229

Creation date: 2024-06-27T20:46:21.229610
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_067T01_9000004774_33229cztM0_level2.evt modeM0/AS1A10_067T01_9000004774_33229cztM0_level2_quad_clean.evt
Size (bytes)1,658,476,800194,814,720
Size1.5 GB 185.8 MB
Events in quadrant A7,204,3881,247,628
Events in quadrant B16,701,3041,207,244
Events in quadrant C8,166,4731,215,506
Events in quadrant D17,099,4551,146,084

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0490

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0318695
B0606994
C0349864
D0619454

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15707230.146432%
B15707253716.152034%
C157072411.534348%
D1570713988.900490%

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 19977 15710 1 1 0.01% 0.01%
B 19977 15710 1527 1527 7.64% 9.72%
C 19977 15710 172 172 0.86% 1.09%
D 19977 15710 968 968 4.85% 6.16%

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 47 55350 146.69 1837 1801 365.0
A 13 6 38151 99.58 1837 1801 365.0
A 13 254 26516 67.71 1837 1801 365.0
B 4 170 6549730 20304.99 1704 1663 322.5
B 5 172 2662544 8251.16 1704 1663 322.5
B 0 199 258832 797.46 1704 1663 322.5
C 14 254 583968 1443.95 1761 1775 403.2
C 0 10 314675 776.05 1761 1775 403.2
C 10 49 246422 606.77 1761 1775 403.2
D 8 195 5820130 12865.15 1723 1685 452.3
D 7 80 1465522 3236.69 1723 1685 452.3
D 2 250 1091837 2410.43 1723 1685 452.3

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