ASTROSAT CZTI

Data Quality Report

Orbit 20715

Creation date: 2024-06-27T18:18:42.214126
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_165T07_9000003062_20715cztM0_level2.evt modeM0/AS1A05_165T07_9000003062_20715cztM0_level2_quad_clean.evt
Size (bytes)456,249,60095,051,520
Size435.1 MB 90.6 MB
Events in quadrant A3,169,861632,358
Events in quadrant B3,330,385620,900
Events in quadrant C3,163,066591,273
Events in quadrant D3,716,416584,510

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134961
B0140231
C0134881
D0152671

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6446510.791188%
B6446590.915296%
C6446681.054918%
D64471261.954397%

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 7506 6447 1 1 0.01% 0.02%
B 7506 6447 2 2 0.03% 0.03%
C 7506 6447 0 0 0.00% 0.00%
D 7507 6448 45 45 0.60% 0.70%

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 5 16 13238 75.92 820 803 163.8
A 0 226 7314 39.75 820 803 163.8
A 3 137 6267 33.36 820 803 163.8
B 7 220 52477 337.77 805 786 153.0
B 0 190 44269 284.14 805 786 153.0
B 0 229 25520 161.62 805 786 153.0
C 14 238 121758 676.26 764 772 178.9
C 3 233 22361 120.67 764 772 178.9
C 7 247 12967 68.16 764 772 178.9
D 5 222 200618 1056.62 777 753 189.2
D 1 52 163656 861.21 777 753 189.2
D 7 238 122768 645.05 777 753 189.2

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