ASTROSAT CZTI

Data Quality Report

Orbit 35001

Creation date: 2022-06-11T10:13:35.563014
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/AS1T05_010T01_9000005016_35001cztM0_level2.evt modeM0/AS1T05_010T01_9000005016_35001cztM0_level2_quad_clean.evt
Size (bytes)429,186,24076,282,560
Size409.3 MB 72.7 MB
Events in quadrant A2,687,080502,457
Events in quadrant B2,809,450514,016
Events in quadrant C2,890,842490,463
Events in quadrant D4,275,172456,607

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109193
B0112682
C0113792
D0159902

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4935260.526849%
B4935380.770010%
C4935731.479230%
D49363216.503241%

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 7029 4936 14 14 0.20% 0.28%
B 7029 4936 17 17 0.24% 0.34%
C 7029 4936 66 66 0.94% 1.34%
D 7030 4937 287 287 4.08% 5.81%

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 76470 588.01 650 640 129.0
A 15 174 51311 392.92 650 640 129.0
A 15 169 30704 233.13 650 640 129.0
B 5 172 79832 660.06 650 636 120.0
B 0 190 75802 626.48 650 636 120.0
B 4 81 36940 302.58 650 636 120.0
C 15 214 206628 1434.96 623 628 143.6
C 0 10 195465 1357.2 623 628 143.6
C 14 67 53358 367.31 623 628 143.6
D 8 195 776966 5319.28 603 589 146.0
D 10 118 609706 4173.31 603 589 146.0
D 12 6 194004 1325.17 603 589 146.0

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