ASTROSAT CZTI

Data Quality Report

Orbit 50236

Creation date: 2025-01-11T03:05:52.741520
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/AS1C09_003T01_9000006442_50236cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50236cztM0_level2_quad_clean.evt
Size (bytes)1,081,071,36058,489,920
Size1.0 GB 55.8 MB
Events in quadrant A9,289,341346,811
Events in quadrant B4,017,088621,740
Events in quadrant C11,976,041212,568
Events in quadrant D14,249,947150,232

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0318410
B0164410
C0398950
D0466460

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6289273243.440929%
B62902293.640700%
C6290416066.136725%
D6290463973.751987%

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 6289 6289 2447 2447 38.91% 38.91%
B 6290 6290 185 185 2.94% 2.94%
C 6290 6289 3016 3016 47.95% 47.96%
D 6290 6290 4696 4696 74.66% 74.66%

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 98 5298672 39429.32 537 524 134.4
A 8 38 495519 3683.8 537 524 134.4
A 12 250 342908 2548.05 537 524 134.4
B 4 206 409161 2937.71 655 632 139.1
B 5 32 323886 2324.5 655 632 139.1
B 3 249 90245 644.4 655 632 139.1
C 4 111 4410324 42536.37 376 375 103.7
C 15 213 2268648 21878.73 376 375 103.7
C 15 197 859096 8282.83 376 375 103.7
D 7 61 8412842 79283.78 370 358 106.1
D 15 108 1460668 13762.75 370 358 106.1
D 15 185 465246 4381.35 370 358 106.1

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