ASTROSAT CZTI

Data Quality Report

Orbit 20191104_A07_134T02_9000003282_level2

Creation date: 2025-12-04T23:14:50.150172
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_134T02_9000003282cztM0_level2.fits modeM0/AS1A07_134T02_9000003282cztM0_level2_quad_clean.evt
Size (bytes)162,368,640127,215,360
Size154.8 MB 121.3 MB
Events in quadrant A1,003,544712,155
Events in quadrant B950,994703,534
Events in quadrant C970,432665,493
Events in quadrant D842,406620,790

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03420
B03420
C03420
D03420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0348600
B0354300
C0347820
D0436930

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A166723492.093330%
B166724222.531190%
C166714932.957231%
D166717824.690780%

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 22224 16673 0 0 0.00% 0.00%
B 22224 16672 0 0 0.00% 0.00%
C 22223 16672 0 0 0.00% 0.00%
D 22223 16666 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 29 923 10.09 260 243 67.4
A 7 110 850 9.01 260 243 67.4
A 0 30 792 8.15 260 243 67.4
B 2 9 744 9.67 251 239 52.2
B 5 232 656 7.99 251 239 52.2
B 5 225 647 7.81 251 239 52.2
C 12 241 688 6.75 255 237 66.8
C 3 234 681 6.64 255 237 66.8
C 3 126 666 6.42 255 237 66.8
D 6 231 654 6.64 240 218 65.6
D 13 238 640 6.43 240 218 65.6
D 3 14 622 6.16 240 218 65.6

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