ASTROSAT CZTI

Data Quality Report

Orbit 54020

Creation date: 2025-09-22T22:01:13.713285
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_041T01_9000006510_54020cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54020cztM0_level2_quad_clean.evt
Size (bytes)536,834,88083,897,280
Size512.0 MB 80.0 MB
Events in quadrant A3,085,794608,908
Events in quadrant B3,318,558659,091
Events in quadrant C3,507,509557,882
Events in quadrant D9,473,207277,948

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137471
B0143021
C0150931
D0325412

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62471362.177045%
B62481292.064661%
C62482483.969270%
D6247316250.616296%

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 7292 6248 80 80 1.10% 1.28%
B 7293 6249 63 63 0.86% 1.01%
C 7293 6249 145 145 1.99% 2.32%
D 7292 6247 2153 2153 29.53% 34.46%

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 15 174 415939 2547.35 664 649 163.0
A 3 14 33684 202.63 664 649 163.0
A 13 254 13431 78.4 664 649 163.0
B 0 213 173048 1224.99 660 638 140.7
B 0 155 123367 872.0 660 638 140.7
B 5 185 122002 862.3 660 638 140.7
C 14 80 388781 2212.64 639 632 175.4
C 15 189 210396 1195.76 639 632 175.4
C 9 38 110093 623.98 639 632 175.4
D 8 176 7236080 61183.02 412 393 118.3
D 3 144 130289 1098.37 412 393 118.3
D 14 20 74329 625.18 412 393 118.3

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