ASTROSAT CZTI

Data Quality Report

Orbit 38151

Creation date: 2024-06-27T21:49:02.150006
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_093T02_9000005368_38151cztM0_level2.fits modeM0/AS1A07_093T02_9000005368_38151cztM0_level2_quad_clean.evt
Size (bytes)231,361,92060,517,440
Size220.6 MB 57.7 MB
Events in quadrant A1,923,269411,632
Events in quadrant B1,779,812411,741
Events in quadrant C1,716,338393,391
Events in quadrant D2,859,060356,779

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A078131
B077461
C073991
D0111431

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A365660.164114%
B3656270.738512%
C365630.082057%
D36561022.789934%

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 3656 3656 4 4 0.11% 0.11%
B 3656 3656 21 21 0.57% 0.57%
C 3656 3656 2 2 0.05% 0.05%
D 3656 3656 96 96 2.63% 2.63%

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 10 83 237539 2847.79 403 393 83.3
A 15 223 35325 419.48 403 393 83.3
A 10 248 25198 297.87 403 393 83.3
B 15 85 64461 824.88 397 386 77.7
B 4 171 51937 663.65 397 386 77.7
B 0 229 40574 517.37 397 386 77.7
C 15 214 154126 1658.75 391 392 92.7
C 0 207 9224 95.3 391 392 92.7
C 1 23 8785 90.56 391 392 92.7
D 12 235 250841 2595.22 390 377 96.5
D 10 203 212646 2199.45 390 377 96.5
D 1 47 204081 2110.71 390 377 96.5

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