ASTROSAT CZTI

Data Quality Report

Orbit 20698

Creation date: 2024-06-27T18:18:32.061381
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/AS1A05_165T07_9000003062_20698cztM0_level2.evt modeM0/AS1A05_165T07_9000003062_20698cztM0_level2_quad_clean.evt
Size (bytes)965,090,880209,329,920
Size920.4 MB 199.6 MB
Events in quadrant A6,218,4251,447,098
Events in quadrant B6,824,5341,414,860
Events in quadrant C6,118,9701,347,792
Events in quadrant D9,277,9961,323,845

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02380
B02380
C02380
D02380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259283
B0278903
C0257523
D0355423

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A116712281.953560%
B116703242.776350%
C116702922.502142%
D116706215.321337%

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 15411 11674 2 2 0.01% 0.02%
B 15410 11673 61 61 0.40% 0.52%
C 15410 11673 0 0 0.00% 0.00%
D 15410 11672 426 426 2.76% 3.65%

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 5 16 15369 43.03 1613 1585 320.4
A 0 226 14484 40.26 1613 1585 320.4
A 3 137 11940 32.32 1613 1585 320.4
B 7 220 480791 1663.08 1564 1533 288.2
B 0 190 54295 183.09 1564 1533 288.2
B 3 64 46572 156.29 1564 1533 288.2
C 14 238 241036 698.87 1500 1514 342.7
C 7 247 20974 56.78 1500 1514 342.7
C 13 61 10582 26.46 1500 1514 342.7
D 5 222 2161010 5956.5 1539 1498 362.5
D 7 238 601775 1655.72 1539 1498 362.5
D 7 38 233197 639.09 1539 1498 362.5

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