ASTROSAT CZTI

Data Quality Report

Orbit 20161218_G06_164T01_9000000896_level2

Creation date: 2025-11-08T16:36:17.108552
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/AS1G06_164T01_9000000896cztM0_level2.fits modeM0/AS1G06_164T01_9000000896cztM0_level2_quad_clean.evt
Size (bytes)377,311,680404,326,080
Size359.8 MB 385.6 MB
Events in quadrant A2,248,6142,492,220
Events in quadrant B2,177,7242,447,292
Events in quadrant C2,234,6702,351,914
Events in quadrant D1,857,6462,047,198

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0867830
B0933930
C0870230
D01311190

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08600
B08580
C08580
D08600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A423696081.435011%
B4234310302.432515%
C423724120.972340%
D4220827886.605383%

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 47442 42558 0 0 0.00% 0.00%
B 47442 42546 0 0 0.00% 0.00%
C 47442 42573 0 0 0.00% 0.00%
D 47442 42404 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 2308 11.74 585 548 149.9
A 7 110 1957 9.4 585 548 149.9
A 0 30 1756 8.06 585 548 149.9
B 2 9 1863 11.29 575 547 116.6
B 12 226 1546 8.57 575 547 116.6
B 14 254 1482 8.02 575 547 116.6
C 1 80 1673 7.26 589 546 155.2
C 1 81 1625 6.95 589 546 155.2
C 12 241 1560 6.54 589 546 155.2
D 6 231 1475 6.9 528 479 144.3
D 11 82 1468 6.85 528 479 144.3
D 4 246 1422 6.53 528 479 144.3

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