ASTROSAT CZTI

Data Quality Report

Orbit 32371

Creation date: 2024-06-27T20:39:27.927249
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_131T01_9000004702_32371cztM0_level2.evt modeM0/AS1A09_131T01_9000004702_32371cztM0_level2_quad_clean.evt
Size (bytes)673,084,800134,628,480
Size641.9 MB 128.4 MB
Events in quadrant A3,966,484916,698
Events in quadrant B6,019,965903,135
Events in quadrant C5,282,168876,718
Events in quadrant D4,623,682874,040

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165904
B0236873
C0207113
D0188683

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72661111.527663%
B72664155.711533%
C72667079.730250%
D72663244.459125%

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 7406 7270 29 29 0.39% 0.40%
B 7406 7270 125 125 1.69% 1.72%
C 7406 7270 232 232 3.13% 3.19%
D 7406 7270 211 211 2.85% 2.90%

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 96 640466 3704.82 855 837 172.6
A 13 6 22612 126.12 855 837 172.6
A 13 254 14134 77.02 855 837 172.6
B 6 159 2065032 12919.88 840 818 159.8
B 5 172 490587 3065.46 840 818 159.8
B 4 80 58622 361.79 840 818 159.8
C 3 233 1624261 8603.02 805 811 188.7
C 14 238 172252 908.5 805 811 188.7
C 0 10 163072 859.86 805 811 188.7
D 12 233 314261 1609.33 818 795 194.8
D 8 195 262892 1345.6 818 795 194.8
D 12 3 183406 937.52 818 795 194.8

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