ASTROSAT CZTI

Data Quality Report

Orbit 27287

Creation date: 2024-06-27T19:38:28.065305
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/AS1T03_243T01_9000003918_27287cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27287cztM0_level2_quad_clean.evt
Size (bytes)493,188,48095,800,320
Size470.3 MB 91.4 MB
Events in quadrant A3,354,928632,712
Events in quadrant B3,893,378638,521
Events in quadrant C3,262,148596,656
Events in quadrant D3,990,679586,167

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139470
B0156090
C0136780
D0160050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6411911.419435%
B64111512.355327%
C64111281.996568%
D64121382.152215%

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 7511 6412 3 3 0.04% 0.05%
B 7511 6412 9 9 0.12% 0.14%
C 7511 6412 0 0 0.00% 0.00%
D 7511 6412 76 76 1.01% 1.19%

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 15 174 27469 155.7 850 834 171.1
A 12 189 20883 117.2 850 834 171.1
A 12 96 19196 107.34 850 834 171.1
B 10 245 604340 3807.5 838 820 158.5
B 12 111 18876 113.91 838 820 158.5
B 11 111 16875 101.29 838 820 158.5
C 14 238 128018 684.43 798 805 185.9
C 15 208 20836 107.77 798 805 185.9
C 13 61 5545 25.5 798 805 185.9
D 1 52 606562 2963.93 807 789 204.4
D 2 250 215179 1048.97 807 789 204.4
D 12 227 69996 338.62 807 789 204.4

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