ASTROSAT CZTI

Data Quality Report

Orbit 00802

Creation date: 2024-06-27T14:03:08.500377
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/AS1P01_010T01_9000000112_00802cztM0_level2.evt modeM0/AS1P01_010T01_9000000112_00802cztM0_level2_quad_clean.evt
Size (bytes)1,146,196,800102,905,280
Size1.1 GB 98.1 MB
Events in quadrant A8,829,852659,436
Events in quadrant B9,020,556666,686
Events in quadrant C8,406,702658,906
Events in quadrant D7,990,005641,876

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0312350
B0318160
C0300130
D0287450

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70191381.966092%
B70191422.023080%
C70191121.595669%
D70201512.150997%

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 7294 7019 409 409 5.61% 5.83%
B 7294 7019 383 383 5.25% 5.46%
C 7294 7019 304 304 4.17% 4.33%
D 7295 7020 293 293 4.02% 4.17%

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 14 79 177771 326.66 2209 2222 537.4
A 15 233 131759 241.04 2209 2222 537.4
A 15 171 30296 52.24 2209 2222 537.4
B 15 22 61943 110.28 2287 2297 540.9
B 0 23 58831 104.52 2287 2297 540.9
B 0 187 49405 87.1 2287 2297 540.9
C 15 241 52114 84.26 2110 2182 592.6
C 3 111 35824 56.77 2110 2182 592.6
C 3 79 30445 47.69 2110 2182 592.6
D 13 25 155203 240.88 2040 2110 635.6
D 1 4 93282 143.45 2040 2110 635.6
D 13 170 49158 74.03 2040 2110 635.6

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