ASTROSAT CZTI

Data Quality Report

Orbit 25768

Creation date: 2024-06-27T19:21:17.466417
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_147T01_9000003754_25768cztM0_level2.evt modeM0/AS1A09_147T01_9000003754_25768cztM0_level2_quad_clean.evt
Size (bytes)485,864,640102,712,320
Size463.4 MB 98.0 MB
Events in quadrant A3,288,211662,705
Events in quadrant B3,447,396679,087
Events in quadrant C3,477,047651,393
Events in quadrant D4,034,002637,562

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141790
B0145330
C0144830
D0164750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6881450.653975%
B6880991.438953%
C68801181.715116%
D68801001.453488%

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 7656 6882 0 0 0.00% 0.00%
B 7655 6880 13 13 0.17% 0.19%
C 7655 6881 0 0 0.00% 0.00%
D 7655 6881 50 50 0.65% 0.73%

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 13 254 9426 50.21 852 835 171.1
A 3 137 7839 40.93 852 835 171.1
A 0 226 7164 36.99 852 835 171.1
B 10 247 66327 403.56 853 830 162.3
B 12 111 19669 116.08 853 830 162.3
B 11 111 18033 106.0 853 830 162.3
C 14 238 135213 687.95 833 839 195.3
C 3 233 96995 492.29 833 839 195.3
C 13 61 5627 24.51 833 839 195.3
D 8 195 367797 1852.23 833 814 198.1
D 13 104 194674 978.45 833 814 198.1
D 7 80 121169 607.45 833 814 198.1

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