ASTROSAT CZTI

Data Quality Report

Orbit 21244

Creation date: 2024-06-27T18:25:22.544528
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/AS1A05_037T01_9000003140_21244cztM0_level2.evt modeM0/AS1A05_037T01_9000003140_21244cztM0_level2_quad_clean.evt
Size (bytes)1,232,763,840148,636,800
Size1.1 GB 141.8 MB
Events in quadrant A6,053,0741,007,073
Events in quadrant B6,374,5721,029,229
Events in quadrant C5,798,969999,121
Events in quadrant D18,297,436634,723

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253762
B0263463
C0247912
D0625088

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02480
B02460
C02460
D02460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A119921371.142428%
B119911701.417730%
C119921861.551034%
D11991537644.833625%

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 13902 11992 1 1 0.01% 0.01%
B 13901 11991 13 13 0.09% 0.11%
C 13902 11992 1 1 0.01% 0.01%
D 13902 11992 4955 4955 35.64% 41.32%

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 221301 735.11 1492 1461 299.1
A 5 168 43895 141.89 1492 1461 299.1
A 12 96 28867 91.64 1492 1461 299.1
B 3 64 304802 1078.05 1483 1448 281.4
B 0 197 99587 348.76 1483 1448 281.4
B 0 190 40847 140.02 1483 1448 281.4
C 14 238 223140 670.85 1424 1435 330.5
C 0 207 14621 39.9 1424 1435 330.5
C 13 61 9876 25.54 1424 1435 330.5
D 1 239 11484829 47378.68 999 971 242.4
D 7 238 2076572 8563.26 999 971 242.4
D 14 34 387259 1593.7 999 971 242.4

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