ASTROSAT CZTI

Data Quality Report

Orbit 50991

Creation date: 2025-03-02T23:27:43.991799
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/AS1C07_001T02_9000006452_50991cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_50991cztM0_level2_quad_clean.evt
Size (bytes)639,037,44099,812,160
Size609.4 MB 95.2 MB
Events in quadrant A5,305,464650,408
Events in quadrant B5,324,024692,992
Events in quadrant C5,255,839606,540
Events in quadrant D7,211,224569,635

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206490
B0208231
C0207770
D0265530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72163985.515521%
B72154506.237006%
C72155036.971587%
D72165687.871397%

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 7216 7216 292 292 4.05% 4.05%
B 7215 7215 266 266 3.69% 3.69%
C 7215 7215 441 441 6.11% 6.11%
D 7215 7215 486 486 6.74% 6.74%

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 80 561360 3057.86 740 722 183.3
A 12 3 380602 2071.96 740 722 183.3
A 8 43 343915 1871.86 740 722 183.3
B 4 81 1290352 8318.58 732 707 155.0
B 12 32 367126 2363.51 732 707 155.0
B 12 3 187142 1202.56 732 707 155.0
C 1 44 657301 3347.91 710 704 196.1
C 15 224 309822 1576.16 710 704 196.1
C 13 3 253278 1287.85 710 704 196.1
D 7 39 1512320 7637.14 708 684 197.9
D 10 181 830581 4192.83 708 684 197.9
D 12 191 679805 3431.08 708 684 197.9

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