ASTROSAT CZTI

Data Quality Report

Orbit 25006

Creation date: 2024-06-27T19:12:37.111422
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/AS1A07_127T03_9000003662_25006cztM0_level2.evt modeM0/AS1A07_127T03_9000003662_25006cztM0_level2_quad_clean.evt
Size (bytes)1,422,334,080216,239,040
Size1.3 GB 206.2 MB
Events in quadrant A8,693,4851,342,863
Events in quadrant B8,969,2451,361,612
Events in quadrant C9,405,2991,305,766
Events in quadrant D14,762,5361,267,257

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0375950
B0380730
C0387180
D0567320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03740
D03740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A184532681.452338%
B184543081.669015%
C184533301.788327%
D184534272.313987%

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 20093 18455 2 2 0.01% 0.01%
B 20094 18456 3 3 0.01% 0.02%
C 20093 18455 10 10 0.05% 0.05%
D 20093 18456 112 112 0.56% 0.61%

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 28081 57.13 2251 2200 453.1
A 3 137 21245 42.04 2251 2200 453.1
A 0 226 19155 37.42 2251 2200 453.1
B 0 190 77316 175.0 2239 2179 429.3
B 12 111 54335 121.48 2239 2179 429.3
B 11 111 48067 106.88 2239 2179 429.3
C 7 247 484356 950.19 2163 2176 507.5
C 14 238 338092 661.96 2163 2176 507.5
C 2 16 74502 142.53 2163 2176 507.5
D 7 238 5194175 9749.93 2191 2129 532.5
D 8 195 846639 1585.87 2191 2129 532.5
D 12 153 236094 439.35 2191 2129 532.5

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