ASTROSAT CZTI

Data Quality Report

Orbit 20230709_A12_037T03_9000005738_level2

Creation date: 2023-07-14T13:58:42.605158
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/AS1A12_037T03_9000005738cztM0_level2.fits modeM0/AS1A12_037T03_9000005738cztM0_level2_quad_clean.evt
Size (bytes)847,967,040930,551,040
Size808.7 MB 887.4 MB
Events in quadrant A4,971,5825,570,028
Events in quadrant B4,936,4365,762,504
Events in quadrant C5,000,0565,438,597
Events in quadrant D4,220,6404,862,888

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019560
B019560
C019560
D019560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03670
C03670
D03670

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02721150
B01961440
C01923740
D02466580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9553738334.012058%
B955433560.372607%
C95541530.055474%
D9554139124.094577%

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 137406 95532 0 0 0.00% 0.00%
B 137406 95546 0 0 0.00% 0.00%
C 137406 95545 0 0 0.00% 0.00%
D 137406 95465 0 0 0.00% 0.00%

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 7 110 4134 9.03 1299 1216 323.3
A 0 29 4108 8.94 1299 1216 323.3
A 9 19 4019 8.67 1299 1216 323.3
B 2 9 4212 11.61 1304 1239 256.0
B 3 17 3518 8.9 1304 1239 256.0
B 3 80 3483 8.76 1304 1239 256.0
C 1 81 4172 8.74 1319 1229 336.9
C 1 80 4004 8.24 1319 1229 336.9
C 3 203 3948 8.07 1319 1229 336.9
D 7 3 3175 6.43 1210 1100 322.6
D 4 160 3092 6.17 1210 1100 322.6
D 6 62 3069 6.1 1210 1100 322.6

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