ASTROSAT CZTI

Data Quality Report

Orbit 20171005_G08_036T01_9000001584_level2

Creation date: 2025-11-17T13:22:26.262833
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_036T01_9000001584cztM0_level2.fits modeM0/AS1G08_036T01_9000001584cztM0_level2_quad_clean.evt
Size (bytes)195,344,640178,865,280
Size186.3 MB 170.6 MB
Events in quadrant A1,166,9181,020,512
Events in quadrant B1,112,4641,000,267
Events in quadrant C1,160,0221,000,153
Events in quadrant D965,520884,762

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490620
B0584550
C0443870
D0598140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04500
B04500
C04500
D04500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A219273831.746705%
B2192910904.970587%
C21929840.383054%
D2193013115.978112%

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 24211 21926 0 0 0.00% 0.00%
B 24211 21930 0 0 0.00% 0.00%
C 24211 21929 0 0 0.00% 0.00%
D 24211 21767 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 1135 10.95 303 283 77.8
A 7 110 942 8.47 303 283 77.8
A 0 30 892 7.82 303 283 77.8
B 2 9 970 11.49 293 278 60.2
B 14 254 796 8.6 293 278 60.2
B 3 17 726 7.44 293 278 60.2
C 12 241 814 6.53 306 283 81.3
C 2 191 788 6.21 306 283 81.3
C 3 126 778 6.09 306 283 81.3
D 6 231 736 6.45 276 250 75.3
D 7 5 693 5.88 276 250 75.3
D 3 14 692 5.87 276 250 75.3

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