ASTROSAT CZTI

Data Quality Report

Orbit 35386

Creation date: 2024-06-27T21:12:49.004092
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_099T01_9000005068_35386cztM0_level2.evt modeM0/AS1A11_099T01_9000005068_35386cztM0_level2_quad_clean.evt
Size (bytes)2,076,045,120159,693,120
Size1.9 GB 152.3 MB
Events in quadrant A7,495,4331,102,167
Events in quadrant B27,490,988688,802
Events in quadrant C8,806,3671,072,057
Events in quadrant D18,030,084890,129

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0327655
B0924244
C0358564
D0640954

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15646320.204525%
B15646885756.608718%
C156462141.367762%
D15646317420.286335%

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 19822 15649 0 0 0.00% 0.00%
B 19822 15649 7001 7001 35.32% 44.74%
C 19822 15649 154 154 0.78% 0.98%
D 19822 15649 3230 3230 16.30% 20.64%

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 10 83 297415 794.02 1842 1804 372.3
A 13 6 39462 101.15 1842 1804 372.3
A 9 143 30627 77.42 1842 1804 372.3
B 4 251 20733274 80240.01 1350 1313 258.4
B 5 236 612032 2363.7 1350 1313 258.4
B 5 172 485938 1875.67 1350 1313 258.4
C 15 214 638359 1553.57 1771 1787 409.7
C 0 10 608449 1480.57 1771 1787 409.7
C 0 207 448796 1090.94 1771 1787 409.7
D 7 80 7871190 19101.61 1659 1610 412.0
D 12 235 1414356 3429.12 1659 1610 412.0
D 10 118 600898 1454.63 1659 1610 412.0

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