ASTROSAT CZTI

Data Quality Report

Orbit 37537

Creation date: 2024-06-27T21:41:14.008373
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/AS1A10_113T02_9000005332_37537cztM0_level2.evt modeM0/AS1A10_113T02_9000005332_37537cztM0_level2_quad_clean.evt
Size (bytes)413,297,28047,759,040
Size394.2 MB 45.5 MB
Events in quadrant A2,911,482277,370
Events in quadrant B2,817,643279,145
Events in quadrant C2,770,097273,182
Events in quadrant D3,663,218250,585

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118153
B0115962
C0112252
D0143652

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5213330.633033%
B5213510.978323%
C5213330.633033%
D52133356.426242%

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 7306 5214 25 25 0.34% 0.48%
B 7306 5214 33 33 0.45% 0.63%
C 7306 5214 33 33 0.45% 0.63%
D 7306 5213 324 324 4.43% 6.22%

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 280758 2306.23 606 595 121.5
A 15 222 138497 1135.17 606 595 121.5
A 13 248 114567 938.19 606 595 121.5
B 5 172 212108 1839.11 606 590 115.0
B 0 245 70382 606.83 606 590 115.0
B 0 230 29012 247.12 606 590 115.0
C 15 214 224095 1637.07 592 595 136.5
C 14 254 115162 839.17 592 595 136.5
C 0 10 108162 787.89 592 595 136.5
D 2 249 597998 4222.31 574 559 141.5
D 13 249 318457 2246.7 574 559 141.5
D 12 233 208143 1467.07 574 559 141.5

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