ASTROSAT CZTI

Data Quality Report

Orbit 20220609_A11_080T02_9000005176_level2

Creation date: 2026-01-03T05:57:14.352891
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/AS1A11_080T02_9000005176cztM0_level2.fits modeM0/AS1A11_080T02_9000005176cztM0_level2_quad_clean.evt
Size (bytes)1,224,100,8001,071,892,800
Size1.1 GB 1022.2 MB
Events in quadrant A7,672,9166,642,037
Events in quadrant B7,206,1986,358,023
Events in quadrant C7,091,1105,504,796
Events in quadrant D5,795,6244,668,714

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05240
B05240
C05240
D05240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02975700
B03662480
C04049590
D05588230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027720
B027720
C027720
D027720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1355034640.342428%
B13550370575.208003%
C1355031449810.699394%
D1355032664219.661557%

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 187973 135503 0 0 0.00% 0.00%
B 187973 135412 0 0 0.00% 0.00%
C 187973 135130 0 0 0.00% 0.00%
D 187973 135122 0 0 0.00% 0.00%

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 7 110 6361 9.15 2005 1885 489.0
A 9 19 6264 8.95 2005 1885 489.0
A 0 29 6053 8.52 2005 1885 489.0
B 2 9 6280 12.16 1913 1827 366.2
B 3 80 5590 10.28 1913 1827 366.2
B 2 8 5068 8.85 1913 1827 366.2
C 1 81 5956 8.73 1876 1755 481.3
C 1 80 5945 8.71 1876 1755 481.3
C 3 203 5552 7.89 1876 1755 481.3
D 7 3 4334 6.4 1661 1514 440.7
D 4 160 4275 6.26 1661 1514 440.7
D 10 113 4181 6.05 1661 1514 440.7

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