ASTROSAT CZTI

Data Quality Report

Orbit 42651

Creation date: 2024-06-27T22:42:38.796070
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/AS1A05_174T01_9000005820_42651cztM0_level2.fits modeM0/AS1A05_174T01_9000005820_42651cztM0_level2_quad_clean.evt
Size (bytes)302,535,36087,382,080
Size288.5 MB 83.3 MB
Events in quadrant A2,808,655581,192
Events in quadrant B2,478,013593,881
Events in quadrant C2,500,733577,361
Events in quadrant D3,004,487528,250

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01130127
B0108405
C0105366
D0125386

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A521580.153404%
B5220240.459770%
C521820.038329%
D5219981.877754%

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 9199 5224 2 2 0.02% 0.04%
B 9200 5225 13 13 0.14% 0.25%
C 9199 5223 0 0 0.00% 0.00%
D 9199 5223 93 93 1.01% 1.78%

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 526017 4303.12 586 572 122.1
A 7 3 7314 55.21 586 572 122.1
A 13 254 6989 52.55 586 572 122.1
B 0 229 53542 464.29 581 565 114.1
B 3 112 52601 456.04 581 565 114.1
B 0 245 30100 258.84 581 565 114.1
C 15 214 217462 1608.62 576 579 134.8
C 3 233 18364 131.91 576 579 134.8
C 15 111 8839 61.26 576 579 134.8
D 2 249 286264 2032.84 571 554 140.5
D 12 6 123137 872.18 571 554 140.5
D 13 249 117622 832.94 571 554 140.5

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