ASTROSAT CZTI

Data Quality Report

Orbit 34170

Creation date: 2024-06-27T20:57:21.715415
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/AS1A11_047T03_9000004880_34170cztM0_level2.evt modeM0/AS1A11_047T03_9000004880_34170cztM0_level2_quad_clean.evt
Size (bytes)1,652,270,400129,456,000
Size1.5 GB 123.5 MB
Events in quadrant A5,955,185804,888
Events in quadrant B19,732,291702,513
Events in quadrant C13,173,287772,755
Events in quadrant D10,320,730756,043

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02580
B02580
C02580
D02580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258843
B0671013
C0478353
D0392393

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12777130.101745%
B12777600947.029819%
C12777176413.806058%
D127774073.185411%

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 15522 12779 2 2 0.01% 0.02%
B 15522 12779 5339 5339 34.40% 41.78%
C 15522 12779 1530 1530 9.86% 11.97%
D 15522 12779 340 340 2.19% 2.66%

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 15 17 80358 261.6 1497 1465 301.6
A 15 169 48971 157.52 1497 1465 301.6
A 10 83 35238 111.99 1497 1465 301.6
B 5 31 7072213 29644.48 1247 1213 238.5
B 5 15 5234384 21939.56 1247 1213 238.5
B 5 14 1451684 6080.96 1247 1213 238.5
C 0 239 6209100 19506.37 1374 1383 318.2
C 0 10 1046648 3284.51 1374 1383 318.2
C 15 214 512811 1607.05 1374 1383 318.2
D 8 195 2852930 8070.76 1436 1396 353.3
D 10 118 684297 1932.83 1436 1396 353.3
D 13 249 350821 988.99 1436 1396 353.3

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