ASTROSAT CZTI

Data Quality Report

Orbit 45874

Creation date: 2024-06-27T23:17:10.097935
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/AS1A13_034T01_9000006134_45874cztM0_level2.fits modeM0/AS1A13_034T01_9000006134_45874cztM0_level2_quad_clean.evt
Size (bytes)1,219,011,840207,789,120
Size1.1 GB 198.2 MB
Events in quadrant A12,077,2731,432,089
Events in quadrant B16,828,8571,189,381
Events in quadrant C5,947,7861,429,296
Events in quadrant D9,201,3041,284,099

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02800
B02800
C02800
D02800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0445492
B0595532
C0283462
D0368222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A138393382.442373%
B13839327423.657779%
C13839640.462461%
D138404283.092486%

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 14649 13841 7 7 0.05% 0.05%
B 14649 13840 2145 2145 14.64% 15.50%
C 14649 13841 10 10 0.07% 0.07%
D 14650 13842 319 319 2.18% 2.30%

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 10 83 5968639 18944.99 1526 1489 315.0
A 0 247 47421 145.83 1526 1489 315.0
A 7 3 32286 97.78 1526 1489 315.0
B 3 112 10444319 37672.91 1406 1361 277.2
B 4 171 388259 1395.73 1406 1361 277.2
B 5 172 112347 400.38 1406 1361 277.2
C 12 2 83115 231.84 1499 1505 352.0
C 3 233 13279 33.45 1499 1505 352.0
C 13 61 9891 23.82 1499 1505 352.0
D 1 52 1496502 3943.85 1495 1444 379.1
D 13 249 458403 1205.42 1495 1444 379.1
D 5 171 377801 992.8 1495 1444 379.1

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