ASTROSAT CZTI

Data Quality Report

Orbit 20190430_T03_105T01_9000002876_level2

Creation date: 2025-11-29T22:11:45.452319
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/AS1T03_105T01_9000002876cztM0_level2.fits modeM0/AS1T03_105T01_9000002876cztM0_level2_quad_clean.evt
Size (bytes)198,207,360203,414,400
Size189.0 MB 194.0 MB
Events in quadrant A1,263,6821,333,900
Events in quadrant B1,213,7121,324,256
Events in quadrant C1,236,0621,282,965
Events in quadrant D757,392692,878

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0466540
B0469340
C0463570
D01364200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04540
B04540
C04540
D04540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A221552190.988490%
B221552571.160009%
C221553701.670052%
D221551288858.171970%

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 23856 22154 0 0 0.00% 0.00%
B 23856 22154 0 0 0.00% 0.00%
C 23856 22153 0 0 0.00% 0.00%
D 23856 22096 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 1262 11.51 329 309 82.8
A 7 110 1046 8.9 329 309 82.8
A 9 19 968 7.96 329 309 82.8
B 2 9 980 10.49 320 306 64.3
B 14 254 825 8.08 320 306 64.3
B 2 8 800 7.69 320 306 64.3
C 1 80 1004 8.22 326 304 85.2
C 1 81 974 7.86 326 304 85.2
C 12 241 896 6.95 326 304 85.2
D 6 231 576 6.36 215 195 59.9
D 3 14 556 6.03 215 195 59.9
D 7 5 549 5.91 215 195 59.9

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