ASTROSAT CZTI

Data Quality Report

Orbit 37087

Creation date: 2024-06-27T21:35:24.367737
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_138T04_9000005282_37087cztM0_level2.evt modeM0/AS1A09_138T04_9000005282_37087cztM0_level2_quad_clean.evt
Size (bytes)437,627,52047,410,560
Size417.4 MB 45.2 MB
Events in quadrant A2,948,211277,651
Events in quadrant B2,702,835279,431
Events in quadrant C3,291,327264,422
Events in quadrant D3,963,632254,688

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117573
B0108442
C0127532
D0151272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5116240.469116%
B5116120.234558%
C51161332.599687%
D51162815.492572%

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 7239 5117 12 12 0.17% 0.23%
B 7239 5117 6 6 0.08% 0.12%
C 7239 5117 117 117 1.62% 2.29%
D 7239 5116 233 233 3.22% 4.55%

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 271035 2031.87 664 653 133.1
A 7 3 50279 372.93 664 653 133.1
A 15 237 30396 223.51 664 653 133.1
B 5 172 31457 248.04 657 643 124.2
B 5 184 30619 241.29 657 643 124.2
B 0 182 17288 133.98 657 643 124.2
C 0 10 330576 2304.98 623 631 143.1
C 1 23 293803 2048.08 623 631 143.1
C 15 214 216604 1508.78 623 631 143.1
D 1 47 418647 2776.32 625 611 150.6
D 2 153 355586 2357.51 625 611 150.6
D 1 52 165459 1094.81 625 611 150.6

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