ASTROSAT CZTI

Data Quality Report

Orbit 27341

Creation date: 2024-06-27T19:39:03.835371
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/AS1T03_255T01_9000003922_27341cztM0_level2.evt modeM0/AS1T03_255T01_9000003922_27341cztM0_level2_quad_clean.evt
Size (bytes)800,285,76086,889,600
Size763.2 MB 82.9 MB
Events in quadrant A3,366,873626,636
Events in quadrant B3,639,315630,064
Events in quadrant C6,490,735536,610
Events in quadrant D10,323,580406,317

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139530
B0149660
C0234740
D0349280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6161871.412108%
B61621161.882506%
C6162134521.827329%
D6162301448.912691%

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 7361 6161 1 1 0.01% 0.02%
B 7362 6162 4 4 0.05% 0.06%
C 7362 6162 843 843 11.45% 13.68%
D 7362 6162 2940 2940 39.93% 47.71%

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 13 254 9973 53.32 868 854 171.0
A 0 226 7562 39.22 868 854 171.0
A 3 137 7519 38.97 868 854 171.0
B 7 205 228678 1433.15 854 836 159.0
B 10 245 22202 134.39 854 836 159.0
B 12 111 18499 111.1 854 836 159.0
C 8 208 2605271 14571.12 767 776 178.7
C 2 16 759790 4246.38 767 776 178.7
C 14 238 125491 697.73 767 776 178.7
D 1 52 7937415 56622.94 591 578 140.2
D 2 250 124840 886.51 591 578 140.2
D 2 234 19143 132.45 591 578 140.2

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