ASTROSAT CZTI

Data Quality Report

Orbit 54920

Creation date: 2025-11-22T12:04:46.400685
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_014T01_9000006528_54920cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54920cztM0_level2_quad_clean.evt
Size (bytes)712,978,560129,781,440
Size679.9 MB 123.8 MB
Events in quadrant A5,564,090869,725
Events in quadrant B4,612,411945,232
Events in quadrant C7,018,285777,655
Events in quadrant D8,468,763684,723

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229692
B0203822
C0275324
D03209614

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01940
B01940
C01940
D01940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A93962342.490421%
B93961041.106854%
C93967628.109834%
D9394132114.062167%

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 11171 9398 126 126 1.13% 1.34%
B 11171 9398 17 17 0.15% 0.18%
C 11171 9397 540 540 4.83% 5.75%
D 11171 9397 1059 1059 9.48% 11.27%

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 14 906214 3694.43 992 967 245.0
A 3 45 295496 1202.01 992 967 245.0
A 0 8 221858 901.49 992 967 245.0
B 5 236 303991 1414.13 989 952 214.3
B 5 185 213433 991.54 989 952 214.3
B 5 172 136686 633.4 989 952 214.3
C 4 5 1764002 6903.27 927 919 255.4
C 6 223 576420 2253.35 927 919 255.4
C 12 252 509653 1991.93 927 919 255.4
D 11 129 1639703 6250.97 914 870 262.2
D 6 46 1426209 5436.64 914 870 262.2
D 14 52 645999 2460.7 914 870 262.2

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