ASTROSAT CZTI

Data Quality Report

Orbit 20220901_A11_027T01_9000005324_level2

Creation date: 2022-09-12T14:29:02.747757
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/AS1A11_027T01_9000005324cztM0_level2_bc.evt modeM0/AS1A11_027T01_9000005324cztM0_level2_quad_clean.evt
Size (bytes)4,378,461,1201,712,733,120
Size4.1 GB 1.6 GB
Events in quadrant A35,088,01811,400,886
Events in quadrant B24,244,42111,736,077
Events in quadrant C27,525,32611,657,001
Events in quadrant D39,511,07910,799,545

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018760
B018760
C018760
D018760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03590
B03590
C03590
D03590

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02333000
B02051630
C02066840
D02668840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A917395590.609337%
B9173912681.382182%
C9173916431.790950%
D9173959246.457450%

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 126453 91759 57 57 0.05% 0.06%
B 126452 91738 161 161 0.13% 0.18%
C 126452 91742 342 342 0.27% 0.37%
D 126452 91728 439 439 0.35% 0.48%

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 15 222 10469642 10260.25 4602 4535 1020.0
A 10 83 3936102 3854.6 4602 4535 1020.0
A 13 248 963241 939.94 4602 4535 1020.0
B 5 172 1568945 1685.0 4681 4586 928.4
B 4 171 731225 782.68 4681 4586 928.4
B 0 213 588472 628.91 4681 4586 928.4
C 15 214 3654901 3460.05 4594 4580 1055.0
C 14 254 2995170 2834.71 4594 4580 1055.0
C 0 10 1440594 1361.16 4594 4580 1055.0
D 13 249 9139979 8536.74 4475 4350 1070.2
D 12 235 3764008 3513.19 4475 4350 1070.2
D 12 227 2829556 2640.0 4475 4350 1070.2

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