ASTROSAT CZTI

Data Quality Report

Orbit 20170831_G07_046T01_9000001506_level2

Creation date: 2026-03-13T17:09:46.216863
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/AS1G07_046T01_9000001506cztM0_level2.fits modeM0/AS1G07_046T01_9000001506cztM0_level2_quad_clean.evt
Size (bytes)370,281,600352,186,560
Size353.1 MB 335.9 MB
Events in quadrant A2,218,9062,086,240
Events in quadrant B2,110,6902,009,484
Events in quadrant C2,223,5702,018,523
Events in quadrant D1,906,6801,799,364

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07160
B07220
C07260
D07230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0878790
B0990950
C0841100
D01087700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A403759492.350464%
B3995920525.135264%
C405716081.498607%
D4077814823.634313%

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 46316 41521 0 0 0.00% 0.00%
B 46316 41107 0 0 0.00% 0.00%
C 46316 41622 0 0 0.00% 0.00%
D 46316 41529 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 2250 11.43 577 537 149.9
A 0 30 1752 8.11 577 537 149.9
A 7 110 1719 7.89 577 537 149.9
B 2 9 1746 10.62 556 526 114.9
B 12 226 1436 7.92 556 526 114.9
B 5 225 1416 7.75 556 526 114.9
C 1 80 1663 7.2 586 541 155.9
C 1 81 1653 7.13 586 541 155.9
C 12 241 1569 6.59 586 541 155.9
D 6 231 1416 6.24 543 491 148.1
D 3 31 1412 6.22 543 491 148.1
D 3 14 1385 6.03 543 491 148.1

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