ASTROSAT CZTI

Data Quality Report

Orbit 35751

Creation date: 2022-05-13T10:57:21.155536
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/AS1A09_029T07_9000005128_35751cztM0_level2.evt modeM0/AS1A09_029T07_9000005128_35751cztM0_level2_quad_clean.evt
Size (bytes)320,639,04057,579,840
Size305.8 MB 54.9 MB
Events in quadrant A1,547,462395,749
Events in quadrant B1,689,224397,777
Events in quadrant C1,665,912390,048
Events in quadrant D4,593,185335,709

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A065791
B070731
C069071
D0158161

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A314480.254453%
B3144200.636132%
C3144210.667939%
D314572723.116057%

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 3144 3144 0 0 0.00% 0.00%
B 3144 3144 18 18 0.57% 0.57%
C 3144 3144 14 14 0.45% 0.45%
D 3145 3145 753 753 23.94% 23.94%

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 10 83 84017 1119.11 369 362 74.8
A 8 192 12721 165.33 369 362 74.8
A 13 6 12201 158.38 369 362 74.8
B 5 255 128861 1811.69 360 351 70.9
B 5 172 69464 974.33 360 351 70.9
B 4 232 41014 573.25 360 351 70.9
C 15 214 134803 1608.16 353 355 83.6
C 0 10 66412 790.12 353 355 83.6
C 2 16 34001 402.45 353 355 83.6
D 14 52 2727250 32430.39 336 326 84.1
D 14 226 209306 2485.33 336 326 84.1
D 13 249 116942 1386.87 336 326 84.1

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