ASTROSAT CZTI

Data Quality Report

Orbit 21521

Creation date: 2024-06-27T18:28:55.949487
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/AS1A05_144T02_9000003176_21521cztM0_level2.evt modeM0/AS1A05_144T02_9000003176_21521cztM0_level2_quad_clean.evt
Size (bytes)429,635,520101,692,800
Size409.7 MB 97.0 MB
Events in quadrant A2,857,084662,608
Events in quadrant B2,969,703682,397
Events in quadrant C2,913,526665,857
Events in quadrant D3,853,786640,319

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125311
B0128041
C0126531
D0158271

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6137140.228124%
B6137170.277008%
C6137280.456249%
D61371492.427896%

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 7367 6138 0 0 0.00% 0.00%
B 7367 6138 3 3 0.04% 0.05%
C 7367 6138 0 0 0.00% 0.00%
D 7367 6138 110 110 1.49% 1.79%

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 3 1 12622 80.93 737 723 147.0
A 13 254 9685 60.96 737 723 147.0
A 0 226 6473 39.11 737 723 147.0
B 0 230 26773 187.56 740 721 138.9
B 4 190 24375 170.3 740 721 138.9
B 12 111 16357 112.57 740 721 138.9
C 14 238 114686 693.08 713 720 164.4
C 8 128 11485 65.47 713 720 164.4
C 8 112 5322 27.99 713 720 164.4
D 1 52 756069 4238.64 703 688 178.2
D 7 38 215074 1202.97 703 688 178.2
D 14 35 92528 515.34 703 688 178.2

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