ASTROSAT CZTI

Data Quality Report

Orbit 08266

Creation date: 2024-06-27T15:30:19.814655
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/AS1G06_136T01_9000001148_08266cztM0_level2.evt modeM0/AS1G06_136T01_9000001148_08266cztM0_level2_quad_clean.evt
Size (bytes)471,876,48077,973,120
Size450.0 MB 74.4 MB
Events in quadrant A3,301,044472,129
Events in quadrant B3,319,719483,236
Events in quadrant C3,362,955483,895
Events in quadrant D3,868,972471,741

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139143
B0138582
C0141602
D0157742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64511602.480236%
B64511682.604247%
C64511662.573244%
D64512173.363820%

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 8801 6452 3 3 0.03% 0.05%
B 8801 6452 13 13 0.15% 0.20%
C 8801 6452 34 34 0.39% 0.53%
D 8801 6452 81 81 0.92% 1.26%

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 15 234 127616 759.58 819 800 167.0
A 0 254 18084 103.52 819 800 167.0
A 13 248 8895 48.49 819 800 167.0
B 11 51 44495 275.03 822 803 158.9
B 10 252 43875 271.12 822 803 158.9
B 0 214 35025 215.42 822 803 158.9
C 9 54 224668 1201.46 804 810 186.3
C 13 61 6123 28.52 804 810 186.3
C 14 222 2261 7.79 804 810 186.3
D 1 52 526864 2728.32 802 782 192.8
D 13 105 218190 1127.5 802 782 192.8
D 2 152 50540 258.05 802 782 192.8

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