ASTROSAT CZTI

Data Quality Report

Orbit 20160522_G05_045T01_9000000468_level2

Creation date: 2025-10-29T21:15:59.013696
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/AS1G05_045T01_9000000468cztM0_level2.fits modeM0/AS1G05_045T01_9000000468cztM0_level2_quad_clean.evt
Size (bytes)3,205,128,9603,452,402,880
Size3.0 GB 3.2 GB
Events in quadrant A19,132,16821,111,852
Events in quadrant B18,446,01620,909,096
Events in quadrant C18,451,77019,080,401
Events in quadrant D16,273,05418,712,136

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07761720
B08174020
C09550350
D07710900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05380
B05380
C05380
D05380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A074340
B074320
C074340
D074340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A36120363511.758291%
B36119958731.625973%
C361101227496.299899%
D36120244901.243072%

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 418797 361132 0 0 0.00% 0.00%
B 418797 361152 0 0 0.00% 0.00%
C 418797 361024 0 0 0.00% 0.00%
D 418797 361140 0 0 0.00% 0.00%

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 0 29 18686 10.91 4984 4626 1288.3
A 7 110 16156 8.95 4984 4626 1288.3
A 0 30 14625 7.76 4984 4626 1288.3
B 2 9 15915 11.57 4880 4633 974.9
B 12 226 13926 9.53 4880 4633 974.9
B 14 254 13354 8.95 4880 4633 974.9
C 1 80 13547 7.05 4875 4505 1282.4
C 1 81 13377 6.92 4875 4505 1282.4
C 12 241 12747 6.43 4875 4505 1282.4
D 3 14 12012 6.37 4658 4228 1221.0
D 7 5 11939 6.32 4658 4228 1221.0
D 6 231 11916 6.3 4658 4228 1221.0

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