ASTROSAT CZTI

Data Quality Report

Orbit 20190423_A05_204T01_9000002856_level2

Creation date: 2025-11-29T15:21:46.801856
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_204T01_9000002856cztM0_level2.fits modeM0/AS1A05_204T01_9000002856cztM0_level2_quad_clean.evt
Size (bytes)3,230,752,3202,870,193,600
Size3.0 GB 2.7 GB
Events in quadrant A20,229,64217,413,095
Events in quadrant B19,335,69417,351,031
Events in quadrant C19,617,22416,406,090
Events in quadrant D15,801,94012,915,157

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07027800
B07071820
C07054110
D012288850

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05070
B05070
C05070
D05070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A067860
B067860
C067860
D067860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A33346939891.196213%
B33347142021.260080%
C33347151121.532967%
D3334705627716.876181%

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 383792 333408 0 0 0.00% 0.00%
B 383792 333431 0 0 0.00% 0.00%
C 383792 333434 0 0 0.00% 0.00%
D 383792 331657 0 0 0.00% 0.00%

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 29 19262 11.43 5263 4944 1252.8
A 7 110 16481 9.21 5263 4944 1252.8
A 9 19 15309 8.27 5263 4944 1252.8
B 2 9 15553 10.87 5106 4868 982.9
B 2 8 12965 8.24 5106 4868 982.9
B 3 17 12682 7.95 5106 4868 982.9
C 1 81 14863 7.62 5181 4838 1314.8
C 1 80 14755 7.54 5181 4838 1314.8
C 12 241 13836 6.84 5181 4838 1314.8
D 10 190 11879 6.54 4519 4133 1183.7
D 3 14 11085 5.87 4519 4133 1183.7
D 10 189 11047 5.84 4519 4133 1183.7

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