ASTROSAT CZTI

Data Quality Report

Orbit 20220626_A09_014T01_9000005204_level2

Creation date: 2022-10-18T18:58:00.407723
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/AS1A09_014T01_9000005204cztM0_level2.fits modeM0/AS1A09_014T01_9000005204cztM0_level2_quad_clean.evt
Size (bytes)106,044,48061,845,120
Size101.1 MB 59.0 MB
Events in quadrant A670,700305,302
Events in quadrant B617,534290,991
Events in quadrant C647,904293,957
Events in quadrant D566,894272,525

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02100
B02100
C02100
D02100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218010
B0260350
C0224940
D0245940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10234220.214970%
B102342742.677350%
C102341601.563416%
D102342132.081298%

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 16363 10234 0 0 0.00% 0.00%
B 16363 10219 0 0 0.00% 0.00%
C 16363 10233 0 0 0.00% 0.00%
D 16363 10232 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 9 19 549 8.73 175 167 43.8
A 0 29 534 8.38 175 167 43.8
A 14 79 526 8.2 175 167 43.8
B 2 9 537 11.49 164 158 33.0
B 3 80 506 10.55 164 158 33.0
B 2 8 453 8.94 164 158 33.0
C 1 81 568 8.94 171 162 45.4
C 1 80 531 8.12 171 162 45.4
C 3 202 525 7.99 171 162 45.4
D 15 47 410 5.93 162 149 44.0
D 7 3 410 5.93 162 149 44.0
D 10 189 399 5.68 162 149 44.0

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