ASTROSAT CZTI

Data Quality Report

Orbit 20757

Creation date: 2024-06-27T18:19:15.032084
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/AS1A05_013T01_9000003070_20757cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20757cztM0_level2_quad_clean.evt
Size (bytes)512,553,600119,661,120
Size488.8 MB 114.1 MB
Events in quadrant A3,545,071828,310
Events in quadrant B3,574,763810,601
Events in quadrant C3,277,952777,294
Events in quadrant D4,694,650765,043

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145431
B0146221
C0137791
D0181821

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63501061.669291%
B63511091.716265%
C63501181.858268%
D63502123.338583%

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 7665 6351 18 18 0.23% 0.28%
B 7666 6352 18 18 0.23% 0.28%
C 7665 6350 0 0 0.00% 0.00%
D 7664 6350 162 162 2.11% 2.55%

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 5 16 205806 1185.54 869 855 172.9
A 0 226 7731 39.77 869 855 172.9
A 12 194 6435 32.28 869 855 172.9
B 7 220 175626 1120.75 841 824 156.0
B 0 197 36292 227.4 841 824 156.0
B 0 190 26497 164.6 841 824 156.0
C 14 238 130215 700.99 805 811 184.6
C 13 61 5686 26.41 805 811 184.6
C 9 54 4256 18.66 805 811 184.6
D 12 227 933871 4712.55 831 810 198.0
D 1 52 306608 1544.47 831 810 198.0
D 1 20 153473 771.04 831 810 198.0

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