ASTROSAT CZTI

Data Quality Report

Orbit 51852

Creation date: 2025-04-30T09:34:00.912476
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_011T05_9000006466_51852cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51852cztM0_level2_quad_clean.evt
Size (bytes)2,186,009,280218,113,920
Size2.0 GB 208.0 MB
Events in quadrant A20,054,3121,306,571
Events in quadrant B14,220,9281,713,304
Events in quadrant C12,239,1551,548,478
Events in quadrant D32,975,258756,955

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0723312
B0548472
C0493853
D01107012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18529420322.683361%
B1852915558.392250%
C1852810005.397237%
D18529979852.879270%

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 19543 18528 3676 3676 18.81% 19.84%
B 19544 18530 1132 1132 5.79% 6.11%
C 19543 18530 774 774 3.96% 4.18%
D 19543 18530 8669 8669 44.36% 46.78%

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 0 228 8151098 18624.05 1749 1706 437.6
A 12 3 1258640 2872.51 1749 1706 437.6
A 8 246 775705 1768.84 1749 1706 437.6
B 10 44 2424566 6045.58 1899 1832 400.7
B 5 185 1328346 3310.12 1899 1832 400.7
B 7 252 395552 982.47 1899 1832 400.7
C 15 158 898811 1726.44 1888 1867 519.5
C 13 3 526043 1008.94 1888 1867 519.5
C 14 80 492700 944.76 1888 1867 519.5
D 11 129 20700512 55465.34 1335 1285 373.2
D 7 60 2314912 6199.56 1335 1285 373.2
D 6 42 885473 2369.26 1335 1285 373.2

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