ASTROSAT CZTI

Data Quality Report

Orbit 40345

Creation date: 2024-06-27T22:15:08.091275
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/AS1A12_056T02_9000005538_40345cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40345cztM0_level2_quad_clean.evt
Size (bytes)388,010,88093,061,440
Size370.0 MB 88.8 MB
Events in quadrant A3,912,534640,946
Events in quadrant B2,469,683680,064
Events in quadrant C2,817,663632,582
Events in quadrant D4,770,810511,901

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151163
B0103862
C0112542
D0175102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50392595.139909%
B5039250.496130%
C5039531.051796%
D503977215.320500%

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 7162 5040 230 230 3.21% 4.56%
B 7162 5040 15 15 0.21% 0.30%
C 7162 5040 46 46 0.64% 0.91%
D 7161 5039 803 803 11.21% 15.94%

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 13 248 767525 6490.71 589 580 118.2
A 10 83 462498 3909.24 589 580 118.2
A 6 10 359243 3035.39 589 580 118.2
B 5 255 42176 363.11 602 588 114.5
B 4 170 34715 297.97 602 588 114.5
B 0 245 18161 153.43 602 588 114.5
C 15 214 233477 1761.36 579 584 132.2
C 14 254 138820 1045.47 579 584 132.2
C 9 187 115394 868.3 579 584 132.2
D 12 227 2026333 14878.87 552 536 136.2
D 2 250 253111 1855.09 552 536 136.2
D 12 128 95081 694.4 552 536 136.2

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