ASTROSAT CZTI

Data Quality Report

Orbit 46546

Creation date: 2024-06-27T23:24:33.133909
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/AS1A13_091T08_9000006228_46546cztM0_level2.fits modeM0/AS1A13_091T08_9000006228_46546cztM0_level2_quad_clean.evt
Size (bytes)570,602,880114,402,240
Size544.2 MB 109.1 MB
Events in quadrant A6,554,535766,742
Events in quadrant B3,570,045807,641
Events in quadrant C4,842,041742,359
Events in quadrant D5,627,270672,704

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238822
B0150682
C0190322
D0213872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68152553.741746%
B68151612.362436%
C68154586.720470%
D68155207.630227%

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 9130 6815 62 62 0.68% 0.91%
B 9130 6815 54 54 0.59% 0.79%
C 9130 6817 401 401 4.39% 5.88%
D 9130 6817 401 401 4.39% 5.88%

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 3360084 20398.73 794 778 164.7
A 9 191 81447 489.85 794 778 164.7
A 13 248 14222 81.64 794 778 164.7
B 4 171 255963 1611.35 803 777 158.4
B 5 32 25016 153.05 803 777 158.4
B 3 112 21820 132.87 803 777 158.4
C 14 254 629085 3469.68 770 774 181.1
C 1 241 620413 3421.8 770 774 181.1
C 9 54 560102 3088.74 770 774 181.1
D 1 52 1957672 10135.4 756 734 193.1
D 13 249 320858 1657.99 756 734 193.1
D 2 120 155335 800.71 756 734 193.1

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