ASTROSAT CZTI

Data Quality Report

Orbit 26335

Creation date: 2024-06-27T19:27:36.300916
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/AS1A09_008T02_9000003796_26335cztM0_level2.evt modeM0/AS1A09_008T02_9000003796_26335cztM0_level2_quad_clean.evt
Size (bytes)440,052,48082,298,880
Size419.7 MB 78.5 MB
Events in quadrant A2,619,036539,808
Events in quadrant B2,695,687554,415
Events in quadrant C3,120,284528,021
Events in quadrant D4,507,137474,075

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115940
B0117490
C0128740
D0171530

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56571272.245006%
B56581452.562743%
C56573005.303164%
D565768612.126569%

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 5852 5658 0 0 0.00% 0.00%
B 5853 5659 3 3 0.05% 0.05%
C 5852 5658 101 101 1.73% 1.79%
D 5852 5658 352 352 6.02% 6.22%

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 13 254 9078 61.58 678 663 136.7
A 3 137 6395 41.94 678 663 136.7
A 0 226 5683 36.73 678 663 136.7
B 5 172 32347 244.5 674 655 129.6
B 12 111 15852 117.24 674 655 129.6
B 11 111 14532 107.06 674 655 129.6
C 2 16 367364 2413.92 649 651 151.9
C 3 233 118515 775.85 649 651 151.9
C 14 238 104006 680.34 649 651 151.9
D 1 52 2033346 13740.95 620 602 147.9
D 12 227 54555 364.71 620 602 147.9
D 11 176 48684 325.02 620 602 147.9

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