ASTROSAT CZTI

Data Quality Report

Orbit 47231

Creation date: 2024-06-27T23:33:10.783276
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/AS1C09_005T01_9000006304_47231cztM0_level2.fits modeM0/AS1C09_005T01_9000006304_47231cztM0_level2_quad_clean.evt
Size (bytes)476,398,080104,339,520
Size454.3 MB 99.5 MB
Events in quadrant A7,356,083674,541
Events in quadrant B3,866,929699,457
Events in quadrant C2,817,585699,606
Events in quadrant D3,093,527636,029

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0266171
B0158601
C0132031
D0139481

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64474246.576702%
B64483054.730149%
C6448701.085608%
D64471211.876842%

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 7222 6448 153 153 2.12% 2.37%
B 7223 6448 143 143 1.98% 2.22%
C 7223 6448 2 2 0.03% 0.03%
D 7222 6447 53 53 0.73% 0.82%

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 3264631 22278.69 702 686 146.5
A 9 191 1262034 8609.58 702 686 146.5
A 15 235 99532 674.69 702 686 146.5
B 15 201 779401 5663.81 703 680 137.5
B 5 32 112579 813.87 703 680 137.5
B 0 200 65667 472.66 703 680 137.5
C 14 254 35006 205.42 712 714 166.9
C 13 61 4854 24.8 712 714 166.9
C 14 67 3098 14.28 712 714 166.9
D 10 181 85537 467.53 710 685 181.5
D 2 249 72564 396.05 710 685 181.5
D 7 96 71957 392.7 710 685 181.5

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