ASTROSAT CZTI

Data Quality Report

Orbit 33316

Creation date: 2024-06-27T20:47:29.169927
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/AS1T04_071T01_9000004782_33316cztM0_level2.evt modeM0/AS1T04_071T01_9000004782_33316cztM0_level2_quad_clean.evt
Size (bytes)569,125,44057,669,120
Size542.8 MB 55.0 MB
Events in quadrant A3,115,158349,714
Events in quadrant B4,755,391315,244
Events in quadrant C3,433,818343,088
Events in quadrant D5,533,781326,581

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129793
B0179092
C0136042
D0203832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5876721.225323%
B587683914.278421%
C5876621.055140%
D58763566.058543%

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 8802 5878 63 63 0.72% 1.07%
B 8802 5878 482 482 5.48% 8.20%
C 8802 5878 52 52 0.59% 0.88%
D 8802 5878 278 278 3.16% 4.73%

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 15 169 408755 2909.09 697 682 140.3
A 13 6 9219 60.86 697 682 140.3
A 13 254 6759 43.32 697 682 140.3
B 5 172 1314297 10257.3 663 645 128.1
B 0 219 708425 5526.51 663 645 128.1
B 0 190 55813 430.76 663 645 128.1
C 15 214 272834 1720.14 677 682 158.2
C 10 49 245624 1548.16 677 682 158.2
C 0 10 102872 645.89 677 682 158.2
D 8 195 1575495 8790.62 658 644 179.2
D 2 249 677179 3776.33 658 644 179.2
D 13 249 281688 1568.75 658 644 179.2

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