ASTROSAT CZTI

Data Quality Report

Orbit 42418

Creation date: 2024-06-27T22:39:51.225201
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_101T04_9000005804_42418cztM0_level2.fits modeM0/AS1A12_101T04_9000005804_42418cztM0_level2_quad_clean.evt
Size (bytes)327,879,36086,382,720
Size312.7 MB 82.4 MB
Events in quadrant A2,712,885604,240
Events in quadrant B2,262,849609,980
Events in quadrant C2,435,193562,696
Events in quadrant D4,342,412493,301

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110402
B099992
C0101412
D0161992

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4924150.304630%
B4924260.528026%
C492440.081235%
D49243707.514216%

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 7046 4925 5 5 0.07% 0.10%
B 7046 4925 14 14 0.20% 0.28%
C 7046 4925 4 4 0.06% 0.08%
D 7046 4925 354 354 5.02% 7.19%

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 479440 4106.25 568 559 116.6
A 7 3 31246 263.13 568 559 116.6
A 13 6 6470 50.68 568 559 116.6
B 3 112 51607 470.62 560 545 108.5
B 12 111 13605 120.37 560 545 108.5
B 11 111 12636 111.44 560 545 108.5
C 15 214 209038 1616.81 552 555 128.9
C 8 79 21215 160.22 552 555 128.9
C 14 254 19014 143.15 552 555 128.9
D 12 33 1698381 13024.34 536 522 130.4
D 1 52 276666 2118.31 536 522 130.4
D 13 249 195846 1498.33 536 522 130.4

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