ASTROSAT CZTI

Data Quality Report

Orbit 20200201_A07_112T01_9000003478_level2

Creation date: 2025-12-09T03:36:56.139819
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/AS1A07_112T01_9000003478cztM0_level2.fits modeM0/AS1A07_112T01_9000003478cztM0_level2_quad_clean.evt
Size (bytes)199,186,560193,032,000
Size190.0 MB 184.1 MB
Events in quadrant A1,243,1041,161,626
Events in quadrant B1,181,4221,178,789
Events in quadrant C1,197,3421,113,797
Events in quadrant D1,041,5351,022,297

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04060
B04060
C04060
D04060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0413470
B0447630
C0413100
D0498620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01010
B01010
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19881780.392334%
B198763121.569732%
C198801950.980885%
D198814682.354006%

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 24076 19821 0 0 0.00% 0.00%
B 24076 19819 0 0 0.00% 0.00%
C 24076 19817 0 0 0.00% 0.00%
D 24076 19823 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 1190 10.89 323 304 81.4
A 9 19 975 8.24 323 304 81.4
A 7 110 958 8.04 323 304 81.4
B 2 9 945 10.24 312 299 63.1
B 5 225 797 7.9 312 299 63.1
B 2 8 788 7.75 312 299 63.1
C 1 81 911 7.55 316 297 81.3
C 1 80 881 7.19 316 297 81.3
C 12 241 847 6.77 316 297 81.3
D 7 3 770 6.16 298 271 81.0
D 15 46 749 5.9 298 271 81.0
D 10 189 742 5.82 298 271 81.0

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