ASTROSAT CZTI

Data Quality Report

Orbit 41254

Creation date: 2024-06-27T22:26:34.355949
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_052T04_9000005638_41254cztM0_level2.fits modeM0/AS1A12_052T04_9000005638_41254cztM0_level2_quad_clean.evt
Size (bytes)362,378,88086,253,120
Size345.6 MB 82.3 MB
Events in quadrant A3,216,760582,220
Events in quadrant B2,597,701594,917
Events in quadrant C3,809,766547,370
Events in quadrant D3,378,702517,345

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130383
B0115862
C0146572
D0137542

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5281811.533800%
B5281711.344442%
C52812735.169475%
D52811813.427381%

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 7043 5282 70 70 0.99% 1.33%
B 7043 5282 32 32 0.45% 0.61%
C 7043 5282 261 261 3.71% 4.94%
D 7043 5282 169 169 2.40% 3.20%

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 500450 4272.54 572 559 117.0
A 6 10 481483 4110.43 572 559 117.0
A 12 189 10982 89.08 572 559 117.0
B 0 186 281981 2530.01 571 553 111.2
B 5 185 43449 385.63 571 553 111.2
B 12 111 14157 122.3 571 553 111.2
C 9 54 1017784 7751.28 556 559 131.2
C 0 10 384195 2923.32 556 559 131.2
C 15 214 222928 1694.46 556 559 131.2
D 2 120 432520 3150.84 560 544 137.1
D 13 249 350937 2555.78 560 544 137.1
D 1 52 213735 1555.02 560 544 137.1

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