ASTROSAT CZTI

Data Quality Report

Orbit 18492

Creation date: 2024-06-27T17:50:31.828558
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/AS1A05_075T09_9000002740_18492cztM0_level2.evt modeM0/AS1A05_075T09_9000002740_18492cztM0_level2_quad_clean.evt
Size (bytes)439,358,40061,634,880
Size419.0 MB 58.8 MB
Events in quadrant A3,493,982370,254
Events in quadrant B3,158,626385,657
Events in quadrant C2,954,721376,032
Events in quadrant D3,341,441365,853

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138520
B0127080
C0121520
D0134810

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52552685.099905%
B52552785.290200%
C5256350.665906%
D52561212.302131%

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 5255 5255 234 234 4.45% 4.45%
B 5255 5255 253 253 4.81% 4.81%
C 5256 5256 0 0 0.00% 0.00%
D 5256 5256 111 111 2.11% 2.11%

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 0 13 1043089 8362.89 605 590 124.7
A 4 2 93241 743.24 605 590 124.7
A 5 98 19811 154.19 605 590 124.7
B 10 245 731226 6200.63 604 589 117.8
B 7 220 28291 235.1 604 589 117.8
B 0 197 18647 153.25 604 589 117.8
C 3 233 542969 3897.13 593 596 139.2
C 14 238 92899 663.23 593 596 139.2
C 0 207 5236 33.34 593 596 139.2
D 1 52 581705 3958.55 597 580 146.8
D 7 238 455326 3097.67 597 580 146.8
D 7 38 25134 167.26 597 580 146.8

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