ASTROSAT CZTI

Data Quality Report

Orbit 34040

Creation date: 2024-06-27T20:55:45.456370
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/AS1A06_003T04_9000004866_34040cztM0_level2.evt modeM0/AS1A06_003T04_9000004866_34040cztM0_level2_quad_clean.evt
Size (bytes)591,255,36070,113,600
Size563.9 MB 66.9 MB
Events in quadrant A3,158,889449,013
Events in quadrant B5,663,533418,184
Events in quadrant C4,041,416433,647
Events in quadrant D4,654,438420,804

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131623
B0207002
C0157542
D0179232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5738911.585918%
B573893216.242593%
C57381532.666434%
D57383506.099686%

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 7291 5739 72 72 0.99% 1.25%
B 7291 5739 672 672 9.22% 11.71%
C 7291 5739 139 139 1.91% 2.42%
D 7291 5739 343 343 4.70% 5.98%

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 15 169 563126 4242.94 662 649 132.6
A 10 83 19329 140.91 662 649 132.6
A 13 6 10845 76.91 662 649 132.6
B 5 31 1705985 14016.34 633 616 121.7
B 5 15 646768 5310.69 633 616 121.7
B 5 172 338219 2774.74 633 616 121.7
C 3 233 780504 5196.67 645 650 150.1
C 0 10 403228 2682.64 645 650 150.1
C 15 214 262898 1747.53 645 650 150.1
D 8 195 590079 3438.19 631 620 171.4
D 2 249 559723 3261.13 631 620 171.4
D 2 250 399296 2325.39 631 620 171.4

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