ASTROSAT CZTI

Data Quality Report

Orbit 52609

Creation date: 2025-06-20T10:16:59.866944
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/AS1C09_011T06_9000006478_52609cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52609cztM0_level2_quad_clean.evt
Size (bytes)1,015,248,96057,384,000
Size968.2 MB 54.7 MB
Events in quadrant A3,478,173566,765
Events in quadrant B14,119,32095,588
Events in quadrant C6,863,913446,625
Events in quadrant D12,657,926210,280

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144371
B0460261
C0246881
D0417093

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59841252.088904%
B5984520787.015374%
C5985124120.735171%
D5984394065.842246%

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 6944 5985 106 106 1.53% 1.77%
B 6944 5985 4567 4567 65.77% 76.31%
C 6945 5986 1171 1171 16.86% 19.56%
D 6944 5985 3682 3682 53.02% 61.52%

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 4 249 498564 3180.89 622 607 156.5
A 3 14 206771 1316.95 622 607 156.5
A 8 246 48385 305.2 622 607 156.5
B 10 128 9639157 134376.75 331 319 71.7
B 10 254 2081949 29020.37 331 319 71.7
B 1 255 310108 4318.82 331 319 71.7
C 15 248 3673282 23662.99 556 552 155.2
C 4 5 458540 2950.77 556 552 155.2
C 13 3 207695 1334.6 556 552 155.2
D 2 62 6017038 48568.82 424 403 123.9
D 6 42 1320663 10657.69 424 403 123.9
D 2 153 768085 6197.05 424 403 123.9

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