ASTROSAT CZTI

Data Quality Report

Orbit 24139

Creation date: 2024-06-27T19:02:34.191332
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_069T01_9000003570_24139cztM0_level2.evt modeM0/AS1A07_069T01_9000003570_24139cztM0_level2_quad_clean.evt
Size (bytes)817,778,88080,424,000
Size779.9 MB 76.7 MB
Events in quadrant A3,159,607560,358
Events in quadrant B5,104,260520,740
Events in quadrant C3,286,871533,653
Events in quadrant D12,770,809360,465

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134842
B0193231
C0138101
D0425001

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6578320.486470%
B657893614.229249%
C6578570.866525%
D6578379657.707510%

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 7638 6578 0 0 0.00% 0.00%
B 7637 6578 854 854 11.18% 12.98%
C 7638 6579 1 1 0.01% 0.02%
D 7638 6578 3502 3502 45.85% 53.24%

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 10771 60.83 819 805 163.8
A 3 137 7262 39.41 819 805 163.8
A 0 226 7254 39.36 819 805 163.8
B 4 200 2040823 13779.81 769 750 148.0
B 0 229 23289 152.24 769 750 148.0
B 12 111 17447 112.78 769 750 148.0
C 14 238 123640 670.4 783 790 183.2
C 1 16 57592 309.97 783 790 183.2
C 2 16 22745 119.81 783 790 183.2
D 7 238 10427059 72706.6 585 567 143.4
D 8 195 59949 414.08 585 567 143.4
D 1 52 45417 312.75 585 567 143.4

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