ASTROSAT CZTI

Data Quality Report

Orbit 20220314_A11_065T12_9000005004_level2

Creation date: 2022-03-19T12:15:23.350441
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_065T12_9000005004cztM0_level2_bc.evt modeM0/AS1A11_065T12_9000005004cztM0_level2_quad_clean.evt
Size (bytes)1,981,088,640407,998,080
Size1.8 GB 389.1 MB
Events in quadrant A22,849,5882,405,416
Events in quadrant B9,991,0862,654,950
Events in quadrant C9,525,6532,639,892
Events in quadrant D15,417,1852,418,895

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06640
B06640
C06640
D06640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01278120
B0796350
C0720800
D0958450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A32549585217.979047%
B325499352.872592%
C325494231.299579%
D3254913414.119942%

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 44769 32422 477 477 1.07% 1.47%
B 44770 32549 56 56 0.13% 0.17%
C 44770 32549 97 97 0.22% 0.30%
D 44770 32548 243 243 0.54% 0.75%

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 15 169 16686547 49250.53 1500 1472 338.8
A 10 83 236881 694.87 1500 1472 338.8
A 13 6 54470 156.44 1500 1472 338.8
B 5 172 2441454 7488.56 1641 1603 325.8
B 0 190 435569 1331.96 1641 1603 325.8
B 4 232 228362 695.98 1641 1603 325.8
C 15 214 1285561 3433.54 1622 1607 373.9
C 0 10 756221 2017.98 1622 1607 373.9
C 4 254 742716 1981.87 1622 1607 373.9
D 8 195 4345868 11396.65 1584 1533 381.2
D 7 38 660290 1728.14 1584 1533 381.2
D 2 249 513897 1344.1 1584 1533 381.2

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