ASTROSAT CZTI

Data Quality Report

Orbit 24181

Creation date: 2024-06-27T19:03:09.564453
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/AS1A07_067T01_9000003578_24181cztM0_level2.evt modeM0/AS1A07_067T01_9000003578_24181cztM0_level2_quad_clean.evt
Size (bytes)1,557,305,280241,799,040
Size1.5 GB 230.6 MB
Events in quadrant A8,492,9581,551,524
Events in quadrant B8,689,5551,578,374
Events in quadrant C8,808,9661,522,929
Events in quadrant D19,936,8821,409,449

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0372983
B0376543
C0379263
D0717593

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18296930.508308%
B182961380.754263%
C182962581.410144%
D18297358519.593376%

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 20226 18299 0 0 0.00% 0.00%
B 20226 18299 7 7 0.03% 0.04%
C 20226 18299 23 23 0.11% 0.13%
D 20227 18298 3062 3062 15.14% 16.73%

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 28989 60.4 2203 2154 444.3
A 3 137 20185 40.58 2203 2154 444.3
A 0 226 18805 37.48 2203 2154 444.3
B 12 111 51775 118.3 2195 2136 419.6
B 11 111 45732 103.9 2195 2136 419.6
B 14 111 39360 88.71 2195 2136 419.6
C 14 238 334028 674.94 2114 2125 491.8
C 2 16 118951 237.57 2114 2125 491.8
C 0 239 46687 90.62 2114 2125 491.8
D 7 238 10520475 21809.39 1977 1919 482.3
D 8 195 1382855 2863.26 1977 1919 482.3
D 1 52 293239 604.03 1977 1919 482.3

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