ASTROSAT CZTI

Data Quality Report

Orbit 22096

Creation date: 2024-06-27T18:36:20.822360
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/AS1A07_007T05_9000003274_22096cztM0_level2.evt modeM0/AS1A07_007T05_9000003274_22096cztM0_level2_quad_clean.evt
Size (bytes)894,997,440184,340,160
Size853.5 MB 175.8 MB
Events in quadrant A6,220,0831,181,636
Events in quadrant B6,392,7051,199,591
Events in quadrant C6,462,5141,152,909
Events in quadrant D7,123,8641,124,924

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02740
B02740
C02740
D02740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0275933
B0278903
C0280033
D0303903

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13374910.680425%
B133751170.874766%
C133751781.330841%
D133752461.839252%

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 15024 13377 2 2 0.01% 0.01%
B 15025 13378 3 3 0.02% 0.02%
C 15025 13378 4 4 0.03% 0.03%
D 15025 13378 121 121 0.81% 0.90%

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 13 254 22546 64.66 1606 1567 324.4
A 15 174 21078 60.14 1606 1567 324.4
A 3 137 13984 38.27 1606 1567 324.4
B 0 190 43859 137.91 1601 1560 306.7
B 12 111 37538 117.3 1601 1560 306.7
B 11 111 32840 101.98 1601 1560 306.7
C 14 238 242860 665.7 1546 1556 362.5
C 0 239 142842 389.77 1546 1556 362.5
C 10 22 30733 80.49 1546 1556 362.5
D 1 52 820612 2162.27 1561 1515 378.8
D 2 136 126536 330.03 1561 1515 378.8
D 2 16 121904 317.81 1561 1515 378.8

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