ASTROSAT CZTI

Data Quality Report

Orbit 37994

Creation date: 2024-06-27T21:47:05.693644
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_082T01_9000005356_37994cztM0_level2.fits modeM0/AS1A11_082T01_9000005356_37994cztM0_level2_quad_clean.evt
Size (bytes)365,549,76059,201,280
Size348.6 MB 56.5 MB
Events in quadrant A3,343,182354,311
Events in quadrant B3,120,707361,540
Events in quadrant C2,999,643357,251
Events in quadrant D3,623,734320,200

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136723
B0129802
C0122972
D0144832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5710340.595447%
B5710951.663748%
C5710430.753065%
D57101041.821366%

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 7412 5711 16 16 0.22% 0.28%
B 7412 5711 55 55 0.74% 0.96%
C 7412 5711 31 31 0.42% 0.54%
D 7412 5711 87 87 1.17% 1.52%

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 378436 2845.61 649 636 132.8
A 12 16 314845 2366.64 649 636 132.8
A 15 222 59103 440.38 649 636 132.8
B 4 171 172414 1393.9 649 631 123.2
B 0 186 87668 706.24 649 631 123.2
B 5 255 86923 700.2 649 631 123.2
C 15 214 239932 1616.93 638 641 148.0
C 14 254 169841 1143.32 638 641 148.0
C 1 23 37876 251.6 638 641 148.0
D 1 52 559916 3641.47 629 610 153.6
D 7 223 232114 1507.25 629 610 153.6
D 5 157 78638 508.02 629 610 153.6

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