ASTROSAT CZTI

Data Quality Report

Orbit 20190120_T03_025T01_9000002670_level2

Creation date: 2025-11-26T21:05:50.472127
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/AS1T03_025T01_9000002670cztM0_level2.fits modeM0/AS1T03_025T01_9000002670cztM0_level2_quad_clean.evt
Size (bytes)1,782,348,4802,049,016,320
Size1.7 GB 1.9 GB
Events in quadrant A10,818,52412,776,445
Events in quadrant B10,471,61613,038,376
Events in quadrant C10,673,99612,268,947
Events in quadrant D9,194,33011,159,986

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A038120
B038120
C038120
D038120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03999840
B03961270
C03915680
D04538300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02820
B02820
C02820
D02820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18712227531.471233%
B18712224171.291671%
C18712227781.484593%
D18712261693.296780%

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 215348 187106 0 0 0.00% 0.00%
B 215348 187114 0 0 0.00% 0.00%
C 215348 187113 0 0 0.00% 0.00%
D 215348 186930 0 0 0.00% 0.00%

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 29 10429 11.09 2815 2643 701.9
A 7 110 8657 8.57 2815 2643 701.9
A 0 30 8275 8.02 2815 2643 701.9
B 2 9 8592 11.13 2768 2648 534.1
B 2 8 7276 8.66 2768 2648 534.1
B 5 128 7024 8.19 2768 2648 534.1
C 12 241 7642 6.96 2823 2641 719.0
C 2 191 7064 6.15 2823 2641 719.0
C 3 126 7033 6.11 2823 2641 719.0
D 10 190 6944 6.57 2625 2393 692.6
D 3 14 6858 6.45 2625 2393 692.6
D 6 231 6648 6.14 2625 2393 692.6

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