ASTROSAT CZTI

Data Quality Report

Orbit 13073

Creation date: 2024-06-27T16:36:13.413318
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/AS1A04_176T02_9000001924_13073cztM0_level2.evt modeM0/AS1A04_176T02_9000001924_13073cztM0_level2_quad_clean.evt
Size (bytes)2,793,208,320226,105,920
Size2.6 GB 215.6 MB
Events in quadrant A10,890,2151,534,226
Events in quadrant B21,605,5531,401,303
Events in quadrant C9,925,6501,543,979
Events in quadrant D40,755,664912,872

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0453655
B0780434
C0437034
D01351274

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04320
B04320
C04320
D04320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A210623051.448106%
B21062516224.508594%
C210621520.721679%
D210621321962.762321%

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 25388 21067 39 39 0.15% 0.19%
B 25388 21066 3851 3851 15.17% 18.28%
C 25388 21067 10 10 0.04% 0.05%
D 25388 21065 12847 12847 50.60% 60.99%

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 12 189 368936 703.06 2603 2549 521.1
A 15 223 198346 375.72 2603 2549 521.1
A 15 239 101562 190.0 2603 2549 521.1
B 4 239 8847945 20929.77 2256 2200 422.6
B 0 85 3529267 8345.33 2256 2200 422.6
B 0 219 155714 363.23 2256 2200 422.6
C 15 208 84246 141.92 2510 2522 575.8
C 14 234 44646 73.15 2510 2522 575.8
C 13 61 18110 27.07 2510 2522 575.8
D 1 52 33491618 81794.03 1731 1688 409.4
D 10 157 300655 730.18 1731 1688 409.4
D 1 255 156954 379.21 1731 1688 409.4

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