ASTROSAT CZTI

Data Quality Report

Orbit 20171101_G08_062T01_9000001660_level2

Creation date: 2025-11-18T03:52:38.959781
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/AS1G08_062T01_9000001660cztM0_level2.fits modeM0/AS1G08_062T01_9000001660cztM0_level2_quad_clean.evt
Size (bytes)1,991,064,9601,826,778,240
Size1.9 GB 1.7 GB
Events in quadrant A12,129,63010,879,235
Events in quadrant B11,361,1169,972,510
Events in quadrant C12,066,14610,487,060
Events in quadrant D9,753,4669,012,689

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05012930
B06081480
C04472350
D06788350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A044420
B044420
C044420
D044420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03360
B03360
C03360
D03360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21857935381.618637%
B218579177058.100046%
C21857914530.664748%
D2185792457311.242160%

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 251913 218581 0 0 0.00% 0.00%
B 251912 218460 0 0 0.00% 0.00%
C 251913 218581 0 0 0.00% 0.00%
D 251913 217094 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 0 29 11808 11.24 3155 2943 788.7
A 7 110 10080 9.05 3155 2943 788.7
A 0 30 9069 7.77 3155 2943 788.7
B 2 9 9728 11.55 3001 2852 595.3
B 3 17 7656 8.07 3001 2852 595.3
B 14 254 7567 7.92 3001 2852 595.3
C 12 241 8579 6.78 3191 2961 828.5
C 2 191 8070 6.17 3191 2961 828.5
C 3 126 7956 6.03 3191 2961 828.5
D 3 14 7335 6.44 2784 2529 746.5
D 6 231 7205 6.26 2784 2529 746.5
D 7 5 6851 5.79 2784 2529 746.5

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