ASTROSAT CZTI

Data Quality Report

Orbit 18897

Creation date: 2024-06-27T17:56:15.283350
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/AS1A06_003T07_9000002818_18897cztM0_level2.evt modeM0/AS1A06_003T07_9000002818_18897cztM0_level2_quad_clean.evt
Size (bytes)1,023,641,280176,224,320
Size976.2 MB 168.1 MB
Events in quadrant A5,699,9931,151,766
Events in quadrant B9,905,5061,096,017
Events in quadrant C5,831,6551,123,870
Events in quadrant D8,710,5571,092,323

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256942
B0378972
C0256782
D0346662

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12630420.332542%
B1263011829.358670%
C126301010.799683%
D126304173.301663%

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 14030 12632 0 0 0.00% 0.00%
B 14030 12631 709 709 5.05% 5.61%
C 14030 12632 0 0 0.00% 0.00%
D 14030 12632 231 231 1.65% 1.83%

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 9 143 21223 66.98 1470 1437 295.4
A 13 254 17595 54.7 1470 1437 295.4
A 0 226 12989 39.1 1470 1437 295.4
B 3 112 4104996 15314.03 1416 1379 268.0
B 10 247 78364 287.3 1416 1379 268.0
B 4 216 36280 130.24 1416 1379 268.0
C 14 238 222315 664.95 1422 1428 332.2
C 3 233 62737 184.56 1422 1428 332.2
C 13 61 10063 25.99 1422 1428 332.2
D 1 52 1868748 5439.45 1423 1381 343.3
D 12 110 503689 1463.17 1423 1381 343.3
D 12 1 450953 1309.56 1423 1381 343.3

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