ASTROSAT CZTI

Data Quality Report

Orbit 55290

Creation date: 2025-12-17T09:58:05.235991
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/AS1A14_009T01_9000006534_55290cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55290cztM0_level2_quad_clean.evt
Size (bytes)535,944,960127,074,240
Size511.1 MB 121.2 MB
Events in quadrant A4,759,335820,556
Events in quadrant B4,351,693882,502
Events in quadrant C4,618,585783,818
Events in quadrant D5,418,331743,337

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0207863
B0197893
C0204543
D0226533

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A88932162.428877%
B88942202.473578%
C88942402.698448%
D88942382.675961%

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 9593 8895 106 106 1.10% 1.19%
B 9594 8897 48 48 0.50% 0.54%
C 9594 8897 177 177 1.84% 1.99%
D 9594 8897 166 166 1.73% 1.87%

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 3 78 641173 2755.9 952 927 232.3
A 0 8 225017 964.58 952 927 232.3
A 7 243 54696 231.44 952 927 232.3
B 7 252 158844 775.31 948 910 203.7
B 2 249 149317 728.54 948 910 203.7
B 0 199 132699 646.96 948 910 203.7
C 13 3 301703 1180.23 935 924 254.8
C 3 248 292847 1145.48 935 924 254.8
C 3 208 109967 427.87 935 924 254.8
D 11 129 1035798 3995.94 925 884 259.0
D 7 70 165399 635.21 925 884 259.0
D 2 31 134555 516.12 925 884 259.0

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