ASTROSAT CZTI

Data Quality Report

Orbit 20190508_T03_112T01_9000002896_level2

Creation date: 2025-11-30T01:51:31.222670
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_112T01_9000002896cztM0_level2.fits modeM0/AS1T03_112T01_9000002896cztM0_level2_quad_clean.evt
Size (bytes)272,183,040234,227,520
Size259.6 MB 223.4 MB
Events in quadrant A1,752,8641,473,481
Events in quadrant B1,683,6861,476,230
Events in quadrant C1,714,1101,380,016
Events in quadrant D1,049,912726,046

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06060
B06060
C06060
D06060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0605680
B0621800
C0643400
D01576160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A29624670.226168%
B296241930.651499%
C296243341.127464%
D296241306944.116257%

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 35159 29624 0 0 0.00% 0.00%
B 35159 29623 0 0 0.00% 0.00%
C 35159 29623 0 0 0.00% 0.00%
D 35159 28032 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 1694 11.11 456 431 113.7
A 7 110 1479 9.22 456 431 113.7
A 0 30 1311 7.74 456 431 113.7
B 2 9 1312 10.21 445 427 86.6
B 2 8 1195 8.86 445 427 86.6
B 5 225 1085 7.59 445 427 86.6
C 1 80 1324 7.61 452 423 118.3
C 1 81 1283 7.27 452 423 118.3
C 12 241 1205 6.61 452 423 118.3
D 4 246 829 6.95 299 272 80.1
D 15 46 759 6.08 299 272 80.1
D 7 3 748 5.94 299 272 80.1

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