ASTROSAT CZTI

Data Quality Report

Orbit 24255

Creation date: 2024-06-27T19:04:00.635711
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/AS1A07_118T01_9000003586_24255cztM0_level2.evt modeM0/AS1A07_118T01_9000003586_24255cztM0_level2_quad_clean.evt
Size (bytes)539,832,96083,710,080
Size514.8 MB 79.8 MB
Events in quadrant A3,262,718531,160
Events in quadrant B3,433,539540,483
Events in quadrant C3,363,965516,742
Events in quadrant D5,840,392485,528

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139062
B0145052
C0141152
D0218252

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6609260.393403%
B6609520.786806%
C6609811.225601%
D660976811.620517%

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 7684 6609 0 0 0.00% 0.00%
B 7684 6609 5 5 0.07% 0.08%
C 7684 6609 5 5 0.07% 0.08%
D 7684 6610 433 433 5.64% 6.55%

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 3 1 10845 58.94 844 828 169.9
A 13 254 10286 55.65 844 828 169.9
A 3 137 7269 37.9 844 828 169.9
B 0 190 53090 326.45 843 824 160.1
B 0 229 40675 248.91 843 824 160.1
B 0 189 18742 111.92 843 824 160.1
C 14 238 129578 679.56 812 818 189.5
C 2 16 41502 214.72 812 818 189.5
C 7 247 18235 91.92 812 818 189.5
D 1 52 1879124 10123.04 765 742 185.6
D 8 195 517675 2785.87 765 742 185.6
D 12 233 383276 2061.56 765 742 185.6

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