ASTROSAT CZTI

Data Quality Report

Orbit 37422

Creation date: 2024-06-27T21:39:47.438683
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_002T01_9000005322_37422cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37422cztM0_level2_quad_clean.evt
Size (bytes)432,498,24092,712,960
Size412.5 MB 88.4 MB
Events in quadrant A2,642,757620,809
Events in quadrant B2,547,294633,259
Events in quadrant C2,433,000641,476
Events in quadrant D5,141,409567,218

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108032
B0107881
C0100731
D0186561

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4909490.998167%
B4909581.181503%
C490950.101854%
D490962912.813200%

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 6852 4910 35 35 0.51% 0.71%
B 6852 4910 35 35 0.51% 0.71%
C 6852 4910 1 1 0.01% 0.02%
D 6852 4910 598 598 8.73% 12.18%

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 220883 1959.34 559 548 112.5
A 15 222 127404 1128.07 559 548 112.5
A 9 143 74981 661.9 559 548 112.5
B 5 172 166634 1574.31 553 539 105.5
B 15 85 63983 601.35 553 539 105.5
B 4 232 57880 543.5 553 539 105.5
C 15 214 206832 1621.36 550 554 127.2
C 14 254 35799 277.03 550 554 127.2
C 0 10 27670 213.13 550 554 127.2
D 10 253 1473969 11592.23 526 511 127.1
D 12 227 938739 7381.38 526 511 127.1
D 12 235 221128 1735.67 526 511 127.1

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