ASTROSAT CZTI

Data Quality Report

Orbit 37102

Creation date: 2024-06-27T21:35:34.285266
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_37102cztM0_level2.evt modeM0/AS1A09_138T04_9000005282_37102cztM0_level2_quad_clean.evt
Size (bytes)434,511,36047,701,440
Size414.4 MB 45.5 MB
Events in quadrant A3,037,360279,832
Events in quadrant B2,937,074279,115
Events in quadrant C2,895,588268,469
Events in quadrant D3,942,192258,171

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119483
B0116602
C0114742
D0150482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5111851.663080%
B5111861.682645%
C5111300.586969%
D51113216.280571%

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 7235 5112 71 71 0.98% 1.39%
B 7235 5112 50 50 0.69% 0.98%
C 7235 5112 36 36 0.50% 0.70%
D 7235 5112 305 305 4.22% 5.97%

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 264882 2069.47 640 631 127.7
A 15 237 224269 1751.41 640 631 127.7
A 7 16 22017 167.48 640 631 127.7
B 5 172 134170 1115.24 634 618 119.8
B 15 85 84291 698.72 634 618 119.8
B 0 190 82785 686.14 634 618 119.8
C 15 214 221104 1566.07 612 617 140.8
C 1 23 151637 1072.66 612 617 140.8
C 0 207 67218 473.05 612 617 140.8
D 1 52 1092778 7436.39 603 587 146.9
D 2 250 142308 964.93 603 587 146.9
D 13 249 129352 876.72 603 587 146.9

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