ASTROSAT CZTI

Data Quality Report

Orbit 25402

Creation date: 2024-06-27T19:17:14.486908
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/AS1A09_057T04_9000003712_25402cztM0_level2.evt modeM0/AS1A09_057T04_9000003712_25402cztM0_level2_quad_clean.evt
Size (bytes)499,538,880100,604,160
Size476.4 MB 95.9 MB
Events in quadrant A3,387,643668,526
Events in quadrant B3,290,661675,566
Events in quadrant C3,324,076639,213
Events in quadrant D4,708,966633,817

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136230
B0133120
C0134700
D0185930

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6152560.910273%
B6152610.991547%
C6152971.576723%
D61521221.983095%

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 7447 6152 0 0 0.00% 0.00%
B 7447 6152 1 1 0.01% 0.02%
C 7447 6152 0 0 0.00% 0.00%
D 7447 6152 47 47 0.63% 0.76%

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 6 16 76525 450.95 853 839 167.8
A 15 173 21962 125.85 853 839 167.8
A 13 254 8056 43.0 853 839 167.8
B 12 111 18045 111.07 830 811 155.2
B 11 111 16484 101.01 830 811 155.2
B 0 190 15713 96.04 830 811 155.2
C 14 238 132412 697.48 811 819 188.7
C 7 87 12045 59.5 811 819 188.7
C 7 247 11217 55.11 811 819 188.7
D 8 195 982898 4955.29 834 815 198.2
D 1 52 423533 2132.9 834 815 198.2
D 7 238 93698 468.66 834 815 198.2

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