ASTROSAT CZTI

Data Quality Report

Orbit 41234

Creation date: 2024-06-27T22:26:19.534990
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/AS1T05_102T01_9000005634_41234cztM0_level2.fits modeM0/AS1T05_102T01_9000005634_41234cztM0_level2_quad_clean.evt
Size (bytes)482,434,56099,613,440
Size460.1 MB 95.0 MB
Events in quadrant A5,497,528612,950
Events in quadrant B3,354,793698,855
Events in quadrant C5,125,115655,022
Events in quadrant D3,398,876615,579

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204283
B0141182
C0194722
D0143852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A620773611.857580%
B6207560.902207%
C62072003.222169%
D6207891.433865%

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 8864 6209 728 728 8.21% 11.72%
B 8864 6209 37 37 0.42% 0.60%
C 8864 6209 162 162 1.83% 2.61%
D 8864 6209 94 94 1.06% 1.51%

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 8 2360541 17457.2 659 645 135.2
A 10 83 553015 4086.13 659 645 135.2
A 12 189 15029 106.4 659 645 135.2
B 5 255 460988 3480.24 675 656 132.3
B 0 229 148838 1120.3 675 656 132.3
B 0 245 33760 250.28 675 656 132.3
C 9 54 1888312 12138.96 659 663 155.5
C 0 10 379241 2434.53 659 663 155.5
C 15 214 261944 1680.22 659 663 155.5
D 2 120 256833 1557.64 665 646 164.5
D 13 249 166438 1008.03 665 646 164.5
D 2 249 144312 873.5 665 646 164.5

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