ASTROSAT CZTI

Data Quality Report

Orbit 43455

Creation date: 2024-06-27T22:52:11.353714
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_018T01_9000005874_43455cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43455cztM0_level2_quad_clean.evt
Size (bytes)407,854,08086,492,160
Size389.0 MB 82.5 MB
Events in quadrant A4,684,013549,150
Events in quadrant B3,466,110595,989
Events in quadrant C2,570,776573,211
Events in quadrant D3,954,053520,119

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176801
B0139541
C0111431
D0154871

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54325379.885862%
B54321462.687776%
C543240.073638%
D54331773.257869%

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 7105 5433 503 503 7.08% 9.26%
B 7105 5433 93 93 1.31% 1.71%
C 7105 5433 0 0 0.00% 0.00%
D 7106 5434 165 165 2.32% 3.04%

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 15 222 1257078 10966.23 559 547 114.6
A 10 83 553895 4829.28 559 547 114.6
A 15 237 401939 3503.1 559 547 114.6
B 0 229 596166 5410.33 573 556 110.1
B 3 112 227714 2063.43 573 556 110.1
B 0 189 187309 1696.4 573 556 110.1
C 15 214 237691 1777.85 568 570 133.4
C 3 233 73761 548.76 568 570 133.4
C 0 207 22411 163.76 568 570 133.4
D 1 52 833715 6056.59 562 545 137.6
D 2 16 367593 2668.19 562 545 137.6
D 12 233 208082 1508.66 562 545 137.6

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