ASTROSAT CZTI

Data Quality Report

Orbit 34171

Creation date: 2024-06-27T20:57:23.461965
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/AS1A11_047T15_9000004882_34171cztM0_level2.evt modeM0/AS1A11_047T15_9000004882_34171cztM0_level2_quad_clean.evt
Size (bytes)572,739,84058,890,240
Size546.2 MB 56.2 MB
Events in quadrant A2,660,073357,101
Events in quadrant B3,464,537358,273
Events in quadrant C6,330,666344,912
Events in quadrant D4,517,086336,611

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114533
B0139122
C0225702
D0172482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5516200.362582%
B55162664.822335%
C551688916.116751%
D55161743.154460%

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 7158 5517 3 3 0.04% 0.05%
B 7158 5517 174 174 2.43% 3.15%
C 7158 5517 787 787 10.99% 14.26%
D 7157 5516 116 116 1.62% 2.10%

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 15 169 58613 432.36 662 650 134.1
A 10 83 22090 159.93 662 650 134.1
A 15 17 15164 108.26 662 650 134.1
B 5 31 351729 2767.57 654 638 126.9
B 5 15 247263 1944.09 654 638 126.9
B 4 232 87248 682.73 654 638 126.9
C 0 239 3361782 23722.93 612 615 141.7
C 0 10 320519 2257.86 612 615 141.7
C 15 214 224506 1580.21 612 615 141.7
D 8 195 1366052 8626.81 637 620 158.3
D 13 249 281557 1774.96 637 620 158.3
D 1 52 111370 699.72 637 620 158.3

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