ASTROSAT CZTI

Data Quality Report

Orbit 32991

Creation date: 2024-06-27T20:44:19.953993
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/AS1A11_080T01_9000004756_32991cztM0_level2.evt modeM0/AS1A11_080T01_9000004756_32991cztM0_level2_quad_clean.evt
Size (bytes)230,276,16039,476,160
Size219.6 MB 37.6 MB
Events in quadrant A1,354,173254,830
Events in quadrant B1,829,553252,912
Events in quadrant C1,465,665253,885
Events in quadrant D2,131,736232,492

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A057152
B071851
C061131
D082741

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A281370.248845%
B28131314.656950%
C2813461.635265%
D28131053.732670%

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 4876 2814 1 1 0.02% 0.04%
B 4876 2814 74 74 1.52% 2.63%
C 4876 2814 37 37 0.76% 1.31%
D 4876 2814 84 84 1.72% 2.99%

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 9 143 9505 132.34 343 337 69.3
A 15 47 8782 121.9 343 337 69.3
A 7 191 5433 73.56 343 337 69.3
B 5 172 363327 5620.98 337 330 64.6
B 0 229 46838 720.17 337 330 64.6
B 0 197 20640 314.5 337 330 64.6
C 0 10 111589 1449.32 329 333 76.8
C 1 241 41023 530.06 329 333 76.8
C 14 67 16912 215.97 329 333 76.8
D 8 195 356675 4199.66 322 316 84.9
D 2 250 223621 2631.63 322 316 84.9
D 2 120 74641 875.91 322 316 84.9

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