ASTROSAT CZTI

Data Quality Report

Orbit 20191104_A07_065T01_9000003284_level2

Creation date: 2025-12-05T15:20:26.966936
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_065T01_9000003284cztM0_level2.fits modeM0/AS1A07_065T01_9000003284cztM0_level2_quad_clean.evt
Size (bytes)794,350,080538,876,800
Size757.6 MB 513.9 MB
Events in quadrant A4,957,0622,873,216
Events in quadrant B4,738,5382,864,762
Events in quadrant C4,805,1222,709,822
Events in quadrant D4,169,3082,481,275

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016000
B016000
C016000
D016000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01622580
B01658390
C01642560
D01893550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A785758371.065224%
B7857710911.388447%
C7857712791.627703%
D7857724923.171411%

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 128850 78575 0 0 0.00% 0.00%
B 128851 78577 0 0 0.00% 0.00%
C 128851 78577 0 0 0.00% 0.00%
D 128851 78513 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 4701 10.86 1291 1211 321.3
A 7 110 4059 8.86 1291 1211 321.3
A 0 30 3708 7.77 1291 1211 321.3
B 2 9 3777 10.48 1251 1197 246.1
B 2 8 3182 8.07 1251 1197 246.1
B 5 128 3075 7.63 1251 1197 246.1
C 1 80 3607 7.45 1268 1186 324.9
C 1 81 3581 7.37 1268 1186 324.9
C 12 241 3324 6.58 1268 1186 324.9
D 7 3 3029 6.23 1188 1083 312.5
D 3 14 2985 6.08 1188 1083 312.5
D 6 67 2969 6.03 1188 1083 312.5

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