ASTROSAT CZTI

Data Quality Report

Orbit 37219

Creation date: 2024-06-27T21:37:04.252400
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/AS1A11_079T01_9000005284_37219cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37219cztM0_level2_quad_clean.evt
Size (bytes)475,865,28089,003,520
Size453.8 MB 84.9 MB
Events in quadrant A2,726,914611,778
Events in quadrant B2,775,523612,625
Events in quadrant C3,120,259597,460
Events in quadrant D5,436,423509,292

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112543
B0114482
C0122632
D0195412

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5194190.365807%
B5194500.962649%
C5194871.675010%
D519492617.828263%

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 7196 5195 5 5 0.07% 0.10%
B 7196 5195 21 21 0.29% 0.40%
C 7196 5195 69 69 0.96% 1.33%
D 7196 5195 822 822 11.42% 15.82%

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 10 83 257545 2024.85 626 615 126.9
A 9 143 32811 253.73 626 615 126.9
A 13 254 7267 52.42 626 615 126.9
B 5 172 146247 1227.14 614 599 118.7
B 0 213 125904 1055.74 614 599 118.7
B 5 184 32788 271.2 614 599 118.7
C 14 254 285853 2015.29 604 610 141.5
C 15 214 223326 1573.53 604 610 141.5
C 0 10 161903 1139.56 604 610 141.5
D 2 249 1961175 14216.98 562 547 137.9
D 12 233 366489 2653.53 562 547 137.9
D 12 217 308065 2229.88 562 547 137.9

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