ASTROSAT CZTI

Data Quality Report

Orbit 36692

Creation date: 2024-06-27T21:30:19.920922
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/AS1T05_041T01_9000005234_36692cztM0_level2.evt modeM0/AS1T05_041T01_9000005234_36692cztM0_level2_quad_clean.evt
Size (bytes)416,442,240106,061,760
Size397.2 MB 101.1 MB
Events in quadrant A2,731,365714,036
Events in quadrant B2,873,443722,515
Events in quadrant C3,417,447704,949
Events in quadrant D3,206,296676,244

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117863
B0121802
C0134072
D0134182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A564390.159490%
B5643400.708843%
C56431582.799929%
D56431041.842991%

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 7376 5644 3 3 0.04% 0.05%
B 7376 5644 17 17 0.23% 0.30%
C 7376 5644 126 126 1.71% 2.23%
D 7376 5644 76 76 1.03% 1.35%

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 208886 1615.65 638 624 128.9
A 9 143 32193 244.9 638 624 128.9
A 13 6 19177 143.93 638 624 128.9
B 5 255 209562 1710.23 638 619 122.2
B 0 189 31869 255.79 638 619 122.2
B 0 221 29695 237.99 638 619 122.2
C 0 10 601761 4168.8 624 628 144.2
C 15 214 252423 1746.17 624 628 144.2
C 10 49 77532 533.32 624 628 144.2
D 13 249 271104 1780.77 625 607 151.9
D 12 233 199152 1307.08 625 607 151.9
D 2 137 96187 629.23 625 607 151.9

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