ASTROSAT CZTI

Data Quality Report

Orbit 37398

Creation date: 2024-06-27T21:39:28.887881
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/AS1C07_001T01_9000005320_37398cztM0_level2.evt modeM0/AS1C07_001T01_9000005320_37398cztM0_level2_quad_clean.evt
Size (bytes)1,346,008,320255,087,360
Size1.3 GB 243.3 MB
Events in quadrant A7,168,8761,750,771
Events in quadrant B7,560,6891,745,383
Events in quadrant C7,840,2441,703,871
Events in quadrant D17,214,5931,522,230

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02980
B02980
C02980
D02980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0307174
B0322413
C0324343
D0612983

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14520520.358127%
B145201681.157025%
C145202141.473829%
D14520269518.560606%

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 25880 14523 28 28 0.11% 0.19%
B 25880 14523 113 113 0.44% 0.78%
C 25880 14523 189 189 0.73% 1.30%
D 25880 14523 2573 2573 9.94% 17.72%

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 10 83 684912 2146.81 1593 1559 318.3
A 2 79 99590 307.97 1593 1559 318.3
A 9 143 93512 288.88 1593 1559 318.3
B 5 172 327477 1102.06 1577 1534 295.8
B 4 171 271900 914.15 1577 1534 295.8
B 0 213 237207 796.85 1577 1534 295.8
C 1 23 766520 2159.21 1540 1553 354.3
C 15 214 606917 1708.71 1540 1553 354.3
C 14 254 256642 720.02 1540 1553 354.3
D 12 235 7670744 21962.32 1453 1412 349.2
D 12 227 1164288 3330.08 1453 1412 349.2
D 2 249 889060 2541.92 1453 1412 349.2

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