ASTROSAT CZTI

Data Quality Report

Orbit 18283

Creation date: 2024-06-27T17:47:50.107020
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/AS1A06_006T01_9000002720_18283cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18283cztM0_level2_quad_clean.evt
Size (bytes)652,665,60091,730,880
Size622.4 MB 87.5 MB
Events in quadrant A3,875,297599,881
Events in quadrant B3,547,409606,905
Events in quadrant C3,416,052589,107
Events in quadrant D8,483,093523,708

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154442
B0144032
C0141072
D0297692

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65653635.529322%
B65651362.071592%
C65651812.757045%
D6565105116.009139%

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 7645 6566 218 218 2.85% 3.32%
B 7645 6566 4 4 0.05% 0.06%
C 7645 6566 8 8 0.10% 0.12%
D 7645 6566 972 972 12.71% 14.80%

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 15 174 580363 3359.21 856 835 172.5
A 0 226 7643 39.46 856 835 172.5
A 12 194 6369 32.08 856 835 172.5
B 7 220 54538 330.2 859 840 162.6
B 0 190 43491 262.27 859 840 162.6
B 0 244 21743 128.54 859 840 162.6
C 14 238 127407 657.83 825 831 192.4
C 0 207 49739 254.18 825 831 192.4
C 8 128 9269 43.85 825 831 192.4
D 7 238 3916290 20101.77 808 786 194.8
D 13 168 1075018 5514.99 808 786 194.8
D 1 52 329671 1688.46 808 786 194.8

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