ASTROSAT CZTI

Data Quality Report

Orbit 39142

Creation date: 2024-06-27T22:00:55.768066
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_044T16_9000005442_39142cztM0_level2.fits modeM0/AS1A12_044T16_9000005442_39142cztM0_level2_quad_clean.evt
Size (bytes)340,246,08097,750,080
Size324.5 MB 93.2 MB
Events in quadrant A2,898,290668,885
Events in quadrant B2,462,216693,178
Events in quadrant C2,620,698651,905
Events in quadrant D4,222,399594,001

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116703
B0102632
C0107372
D0162632

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5027120.238711%
B502790.179033%
C502730.059678%
D50271212.407002%

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 7090 5028 2 2 0.03% 0.04%
B 7090 5028 0 0 0.00% 0.00%
C 7090 5028 1 1 0.01% 0.02%
D 7090 5028 115 115 1.62% 2.29%

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 382086 3013.9 631 621 126.6
A 15 223 47549 370.77 631 621 126.6
A 13 6 11969 89.66 631 621 126.6
B 12 111 14839 119.32 625 610 119.2
B 11 111 13718 109.92 625 610 119.2
B 14 111 13366 106.97 625 610 119.2
C 15 214 214616 1521.73 608 613 140.6
C 9 187 19912 137.23 608 613 140.6
C 15 208 6965 45.17 608 613 140.6
D 12 235 1608347 11042.71 603 588 145.6
D 2 249 106598 728.12 603 588 145.6
D 13 249 54933 373.26 603 588 145.6

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