ASTROSAT CZTI

Data Quality Report

Orbit 36854

Creation date: 2024-06-27T21:32:24.527885
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/AS1A11_075T01_9000005244_36854cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36854cztM0_level2_quad_clean.evt
Size (bytes)325,745,28076,196,160
Size310.7 MB 72.7 MB
Events in quadrant A2,648,983649,832
Events in quadrant B776,0599,993
Events in quadrant C2,935,915663,428
Events in quadrant D3,155,575628,331

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110703
B051562
C0118542
D0127562

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5047180.356648%
B50475047100.000000%
C50471122.219140%
D5047841.664355%

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 7079 5048 13 13 0.18% 0.26%
B 7078 5046 1 1 0.01% 0.02%
C 7079 5048 89 89 1.26% 1.76%
D 7079 5048 98 98 1.38% 1.94%

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 10 83 224205 1834.07 607 597 121.9
A 15 223 32622 262.67 607 597 121.9
A 13 248 19237 152.89 607 597 121.9
B 12 243 699316 183972.59 10 10 3.8
B 12 144 12743 3349.78 10 10 3.8
B 5 172 6546 1719.48 10 10 3.8
C 0 10 290998 2105.36 600 604 137.9
C 15 214 210507 1521.8 600 604 137.9
C 3 233 46545 333.07 600 604 137.9
D 13 171 201665 1396.75 596 582 144.0
D 13 249 158835 1099.25 596 582 144.0
D 2 153 102434 707.48 596 582 144.0

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