ASTROSAT CZTI

Data Quality Report

Orbit 21221

Creation date: 2024-06-27T18:25:09.268254
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/AS1A06_005T05_9000003136_21221cztM0_level2.evt modeM0/AS1A06_005T05_9000003136_21221cztM0_level2_quad_clean.evt
Size (bytes)286,686,72041,716,800
Size273.4 MB 39.8 MB
Events in quadrant A1,786,827258,817
Events in quadrant B1,855,180268,900
Events in quadrant C1,808,595255,546
Events in quadrant D2,994,057232,757

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A074681
B076731
C075621
D0112441

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3478361.035078%
B3479581.667146%
C3479782.242024%
D34792868.220753%

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 4773 3479 0 0 0.00% 0.00%
B 4774 3479 1 1 0.02% 0.03%
C 4774 3480 6 6 0.13% 0.17%
D 4774 3480 298 298 6.24% 8.56%

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 15 236 21546 227.31 453 444 92.8
A 11 47 20441 215.4 453 444 92.8
A 13 254 4839 47.34 453 444 92.8
B 3 64 17619 195.32 456 444 87.9
B 0 228 16608 183.83 456 444 87.9
B 0 229 10983 119.86 456 444 87.9
C 14 238 67360 657.21 432 435 101.8
C 3 233 27751 268.25 432 435 101.8
C 0 10 22538 217.05 432 435 101.8
D 13 174 725131 6824.99 427 414 106.2
D 7 238 394795 3714.07 427 414 106.2
D 15 0 79042 740.48 427 414 106.2

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