ASTROSAT CZTI

Data Quality Report

Orbit 56457

Creation date: 2026-03-06T10:50:40.984569
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_060T01_9000006556_56457cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56457cztM0_level2_quad_clean.evt
Size (bytes)1,449,711,360188,781,120
Size1.4 GB 180.0 MB
Events in quadrant A12,443,7141,202,108
Events in quadrant B18,140,2331,014,031
Events in quadrant C8,219,3071,316,644
Events in quadrant D13,714,4551,157,729

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0474533
B0639264
C0349563
D0510493

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03020
B03020
C03020
D03020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14833167711.305872%
B14833483732.609722%
C148342121.429149%
D1483311227.564215%

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 15248 14836 1570 1570 10.30% 10.58%
B 15249 14837 4023 4023 26.38% 27.11%
C 15249 14837 167 167 1.10% 1.13%
D 15248 14836 1193 1193 7.82% 8.04%

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 4 206 2189818 5736.04 1523 1480 381.5
A 12 3 1869808 4897.23 1523 1480 381.5
A 4 159 808105 2114.31 1523 1480 381.5
B 5 172 10962245 38031.08 1341 1288 288.2
B 4 206 1088891 3773.64 1341 1288 288.2
B 8 128 204229 704.14 1341 1288 288.2
C 1 16 568186 1354.55 1535 1524 418.3
C 12 254 498182 1187.21 1535 1524 418.3
C 12 252 409186 974.47 1535 1524 418.3
D 9 49 2298356 5440.1 1492 1426 422.2
D 8 129 1622082 3838.4 1492 1426 422.2
D 2 249 1156377 2735.41 1492 1426 422.2

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