ASTROSAT CZTI

Data Quality Report

Orbit 36140

Creation date: 2022-08-10T19:34:06.065826
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/AS1T04_069T01_9000005158_36140cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36140cztM0_level2_quad_clean.evt
Size (bytes)454,656,96069,252,480
Size433.6 MB 66.0 MB
Events in quadrant A2,722,393449,601
Events in quadrant B3,856,363421,011
Events in quadrant C2,840,116427,452
Events in quadrant D3,973,478410,355

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116883
B0150592
C0119012
D0155292

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5546150.270465%
B55463806.851785%
C5546861.550667%
D55462514.525784%

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 7190 5547 2 2 0.03% 0.04%
B 7189 5546 296 296 4.12% 5.34%
C 7190 5547 63 63 0.88% 1.14%
D 7190 5547 235 235 3.27% 4.24%

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 187312 1436.59 639 627 129.9
A 9 143 36236 274.02 639 627 129.9
A 8 144 22535 168.59 639 627 129.9
B 5 172 1113345 9337.84 611 594 119.2
B 4 171 154751 1293.64 611 594 119.2
B 0 190 75315 627.03 611 594 119.2
C 15 214 235390 1644.97 606 609 142.7
C 0 10 221399 1546.95 606 609 142.7
C 10 49 18081 122.42 606 609 142.7
D 12 17 805543 5458.1 604 586 147.5
D 2 249 253726 1716.44 604 586 147.5
D 1 52 218062 1474.62 604 586 147.5

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