ASTROSAT CZTI

Data Quality Report

Orbit 42016

Creation date: 2024-06-27T22:35:46.751555
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_011T26_9000005732_42016cztM0_level2.fits modeM0/AS1A12_011T26_9000005732_42016cztM0_level2_quad_clean.evt
Size (bytes)439,565,760115,974,720
Size419.2 MB 110.6 MB
Events in quadrant A4,481,772766,783
Events in quadrant B3,495,653792,513
Events in quadrant C3,364,974759,916
Events in quadrant D4,370,962692,235

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176005
B0154442
C0146182
D0179372

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71781201.671775%
B7179270.376097%
C7179130.181084%
D71791191.657612%

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 19854 7180 82 82 0.41% 1.14%
B 19853 7181 9 9 0.05% 0.13%
C 19853 7181 11 11 0.06% 0.15%
D 19853 7181 100 100 0.50% 1.39%

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 763856 4790.44 772 754 159.3
A 15 223 608923 3817.84 772 754 159.3
A 12 189 89038 554.21 772 754 159.3
B 0 190 214446 1452.85 768 747 147.1
B 4 171 164780 1115.19 768 747 147.1
B 3 112 36930 245.99 768 747 147.1
C 15 214 303777 1714.81 755 758 176.7
C 9 54 66505 372.07 755 758 176.7
C 8 79 14296 76.61 755 758 176.7
D 13 249 447474 2443.58 752 729 182.8
D 2 120 233332 1272.28 752 729 182.8
D 2 249 159165 866.6 752 729 182.8

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