ASTROSAT CZTI

Data Quality Report

Orbit 26255

Creation date: 2024-06-27T19:26:39.377253
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/AS1A09_079T03_9000003790_26255cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26255cztM0_level2_quad_clean.evt
Size (bytes)574,868,16097,588,800
Size548.2 MB 93.1 MB
Events in quadrant A3,663,383635,984
Events in quadrant B3,243,597663,662
Events in quadrant C5,623,034606,454
Events in quadrant D4,455,516611,969

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151140
B0137870
C0210720
D0176100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62581372.189198%
B6259580.926666%
C625993414.922512%
D62593375.384247%

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 7463 6259 50 50 0.67% 0.80%
B 7463 6259 3 3 0.04% 0.05%
C 7463 6259 531 531 7.12% 8.48%
D 7463 6259 248 248 3.32% 3.96%

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 0 13 535610 3272.49 811 795 163.4
A 13 254 11068 62.86 811 795 163.4
A 0 226 7108 38.63 811 795 163.4
B 12 111 17843 110.07 824 805 154.8
B 11 111 15456 94.65 824 805 154.8
B 5 172 13253 80.42 824 805 154.8
C 4 254 2395631 13606.04 759 764 176.0
C 14 238 120663 681.19 759 764 176.0
C 2 16 74864 420.99 759 764 176.0
D 1 52 1055905 5617.32 786 768 187.8
D 15 0 333602 1771.94 786 768 187.8
D 2 153 37565 195.9 786 768 187.8

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