ASTROSAT CZTI

Data Quality Report

Orbit 29618

Creation date: 2024-06-27T20:06:06.285310
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/AS1T03_286T01_9000004268_29618cztM0_level2.evt modeM0/AS1T03_286T01_9000004268_29618cztM0_level2_quad_clean.evt
Size (bytes)743,650,560162,711,360
Size709.2 MB 155.2 MB
Events in quadrant A5,042,8281,049,608
Events in quadrant B5,290,5851,086,903
Events in quadrant C5,325,6011,039,833
Events in quadrant D6,128,6961,002,044

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222382
B0226912
C0227662
D0254512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10831650.600129%
B108321411.301699%
C108321791.652511%
D10832890.821640%

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 13041 10833 0 0 0.00% 0.00%
B 13042 10833 8 8 0.06% 0.07%
C 13042 10834 2 2 0.02% 0.02%
D 13042 10834 34 34 0.26% 0.31%

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 18993 68.11 1304 1279 260.1
A 3 137 12753 44.12 1304 1279 260.1
A 1 113 10948 37.18 1304 1279 260.1
B 15 33 73512 293.35 1309 1275 246.3
B 0 229 51788 205.13 1309 1275 246.3
B 12 111 30302 117.88 1309 1275 246.3
C 14 238 210944 722.55 1260 1266 290.2
C 10 22 68165 230.53 1260 1266 290.2
C 3 233 63169 213.32 1260 1266 290.2
D 8 195 882859 3051.22 1250 1221 288.9
D 13 104 135167 463.57 1250 1221 288.9
D 12 227 111022 380.01 1250 1221 288.9

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