ASTROSAT CZTI

Data Quality Report

Orbit 30820

Creation date: 2024-06-27T20:20:00.320379
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/AS1C06_003T01_9000004452_30820cztM0_level2.evt modeM0/AS1C06_003T01_9000004452_30820cztM0_level2_quad_clean.evt
Size (bytes)603,031,680107,714,880
Size575.1 MB 102.7 MB
Events in quadrant A3,162,815729,727
Events in quadrant B5,168,154724,551
Events in quadrant C3,275,437697,291
Events in quadrant D6,212,288652,704

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135351
B0201781
C0137141
D0230441

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65681141.735688%
B65691892.877150%
C65691472.237784%
D65685468.313033%

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 7378 6568 1 1 0.01% 0.02%
B 7379 6569 11 11 0.15% 0.17%
C 7379 6569 3 3 0.04% 0.05%
D 7378 6568 441 441 5.98% 6.71%

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 0 13 36513 221.73 806 788 161.1
A 12 96 16602 98.15 806 788 161.1
A 13 254 12653 73.64 806 788 161.1
B 6 159 1847605 12306.68 792 769 150.1
B 0 155 48267 316.51 792 769 150.1
B 5 172 47261 309.81 792 769 150.1
C 14 238 125825 709.39 761 765 176.3
C 3 233 109687 617.85 761 765 176.3
C 0 10 35043 194.44 761 765 176.3
D 8 195 2001206 11313.01 751 733 176.8
D 12 218 768395 4341.26 751 733 176.8
D 2 250 314448 1774.11 751 733 176.8

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