ASTROSAT CZTI

Data Quality Report

Orbit 39315

Creation date: 2024-06-27T22:03:07.962882
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/AS1A12_061T07_9000005468_39315cztM0_level2.fits modeM0/AS1A12_061T07_9000005468_39315cztM0_level2_quad_clean.evt
Size (bytes)459,089,28089,737,920
Size437.8 MB 85.6 MB
Events in quadrant A2,933,372647,742
Events in quadrant B2,492,131674,352
Events in quadrant C2,743,950625,820
Events in quadrant D8,426,468410,421

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116503
B0104862
C0110162
D0286252

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5119460.898613%
B5119120.234421%
C5119230.449307%
D5119178334.831022%

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 7091 5120 28 28 0.39% 0.55%
B 7091 5120 3 3 0.04% 0.06%
C 7091 5120 12 12 0.17% 0.23%
D 7091 5120 1629 1629 22.97% 31.82%

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 392866 3166.05 613 603 123.9
A 13 248 143772 1155.55 613 603 123.9
A 15 222 28395 224.32 613 603 123.9
B 5 172 48436 413.3 614 599 115.7
B 0 183 18466 154.37 614 599 115.7
B 12 111 14500 120.1 614 599 115.7
C 15 214 232669 1657.77 602 607 140.0
C 9 187 110024 781.64 602 607 140.0
C 14 254 46651 328.92 602 607 140.0
D 12 235 5842526 45415.81 527 514 128.6
D 13 249 322623 2504.08 527 514 128.6
D 12 227 96004 742.34 527 514 128.6

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