ASTROSAT CZTI

Data Quality Report

Orbit 25971

Creation date: 2024-06-27T19:23:24.608639
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/AS1A07_068T01_9000003760_25971cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25971cztM0_level2_quad_clean.evt
Size (bytes)504,282,24093,121,920
Size480.9 MB 88.8 MB
Events in quadrant A3,168,602613,491
Events in quadrant B3,213,671606,742
Events in quadrant C4,071,516571,922
Events in quadrant D4,372,354569,369

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134980
B0136440
C0163960
D0173540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6573330.502054%
B6570410.624049%
C65721582.404139%
D65722884.382228%

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 7194 6575 0 0 0.00% 0.00%
B 7194 6575 0 0 0.00% 0.00%
C 7195 6576 40 40 0.56% 0.61%
D 7195 6576 238 238 3.31% 3.62%

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 11 29 44592 269.38 808 789 162.6
A 13 254 11365 65.04 808 789 162.6
A 3 137 7558 41.63 808 789 162.6
B 15 33 33840 215.76 795 775 153.2
B 0 229 26484 167.76 795 775 153.2
B 0 190 24224 153.02 795 775 153.2
C 3 233 975862 5503.84 754 757 177.2
C 14 238 121148 679.53 754 757 177.2
C 7 238 25151 137.69 754 757 177.2
D 1 52 1426161 7768.33 760 740 183.5
D 2 120 29735 158.02 760 740 183.5
D 2 234 25322 133.97 760 740 183.5

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