ASTROSAT CZTI

Data Quality Report

Orbit 41284

Creation date: 2024-06-27T22:26:59.224238
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_011T42_9000005640_41284cztM0_level2.fits modeM0/AS1A12_011T42_9000005640_41284cztM0_level2_quad_clean.evt
Size (bytes)317,018,88087,684,480
Size302.3 MB 83.6 MB
Events in quadrant A2,762,378595,245
Events in quadrant B2,420,987614,989
Events in quadrant C3,081,768552,478
Events in quadrant D3,061,915525,731

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113053
B0107822
C0123842
D0126862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5231100.191168%
B523140.076467%
C52312504.779201%
D52311292.466068%

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 7084 5232 3 3 0.04% 0.06%
B 7084 5232 0 0 0.00% 0.00%
C 7084 5232 247 247 3.49% 4.72%
D 7084 5232 132 132 1.86% 2.52%

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 483013 3998.32 588 577 120.7
A 3 137 6465 48.8 588 577 120.7
A 13 254 6141 46.11 588 577 120.7
B 7 202 103755 898.42 586 569 114.9
B 12 111 14606 122.22 586 569 114.9
B 11 111 13570 113.2 586 569 114.9
C 0 10 680254 5179.6 556 562 131.2
C 15 214 220704 1677.59 556 562 131.2
C 15 159 14900 109.26 556 562 131.2
D 2 249 362987 2633.19 562 547 137.6
D 1 52 232840 1687.65 562 547 137.6
D 5 222 136934 990.88 562 547 137.6

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