ASTROSAT CZTI

Data Quality Report

Orbit 36299

Creation date: 2022-06-15T17:48:47.169169
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/AS1A11_089T02_9000005188_36299cztM0_level2.evt modeM0/AS1A11_089T02_9000005188_36299cztM0_level2_quad_clean.evt
Size (bytes)468,115,20084,294,720
Size446.4 MB 80.4 MB
Events in quadrant A2,770,575564,271
Events in quadrant B3,950,341524,211
Events in quadrant C2,964,573552,670
Events in quadrant D4,111,469520,064

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117933
B0152642
C0122002
D0160022

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5591150.268288%
B55915349.551064%
C5591450.804865%
D55913165.651941%

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 7204 5592 4 4 0.06% 0.07%
B 7204 5592 319 319 4.43% 5.70%
C 7204 5592 30 30 0.42% 0.54%
D 7204 5592 299 299 4.15% 5.35%

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 187385 1417.13 652 640 131.8
A 9 143 33677 250.7 652 640 131.8
A 13 6 10249 72.92 652 640 131.8
B 5 172 1330574 11215.24 607 591 118.6
B 15 85 55429 462.43 607 591 118.6
B 5 236 50460 420.53 607 591 118.6
C 15 214 237988 1624.85 624 629 146.1
C 0 10 159785 1089.51 624 629 146.1
C 4 254 87713 596.14 624 629 146.1
D 12 6 650847 4309.77 619 602 150.9
D 12 227 490505 3247.04 619 602 150.9
D 13 171 260768 1724.36 619 602 150.9

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