ASTROSAT CZTI

Data Quality Report

Orbit 15484

Creation date: 2024-06-27T17:09:13.264251
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/AS1T02_082T01_9000002286_15484cztM0_level2.evt modeM0/AS1T02_082T01_9000002286_15484cztM0_level2_quad_clean.evt
Size (bytes)174,130,56019,572,480
Size166.1 MB 18.7 MB
Events in quadrant A1,228,242101,467
Events in quadrant B1,299,629103,181
Events in quadrant C1,328,451101,020
Events in quadrant D1,236,45698,082

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A053611
B054971
C055091
D054221

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A262860.228311%
B2628271.027397%
C2628250.951294%
D262880.304414%

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 2629 2629 0 0 0.00% 0.00%
B 2629 2629 10 10 0.38% 0.38%
C 2629 2629 0 0 0.00% 0.00%
D 2629 2629 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 0 226 2812 37.86 318 311 66.1
A 12 194 2352 30.9 318 311 66.1
A 3 137 1987 25.37 318 311 66.1
B 15 222 36759 578.41 321 313 63.0
B 12 111 7184 109.04 321 313 63.0
B 11 111 6046 90.98 321 313 63.0
C 14 238 47976 642.45 314 316 74.2
C 3 233 46024 616.14 314 316 74.2
C 9 54 6879 88.47 314 316 74.2
D 1 52 30719 388.85 313 303 78.2
D 2 234 8387 103.35 313 303 78.2
D 12 221 7414 90.91 313 303 78.2

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