ASTROSAT CZTI

Data Quality Report

Orbit 35241

Creation date: 2022-04-05T07:35:42.124493
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_004T01_9000005052_35241cztM0_level2.evt modeM0/AS1C07_004T01_9000005052_35241cztM0_level2_quad_clean.evt
Size (bytes)1,639,967,040135,362,880
Size1.5 GB 129.1 MB
Events in quadrant A6,272,496874,550
Events in quadrant B16,098,814768,560
Events in quadrant C6,813,127879,462
Events in quadrant D19,588,407655,501

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274534
B0569513
C0282703
D0674883

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02680
B02680
C02680
D02680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13309580.435795%
B13309346926.065069%
C133091050.788940%
D13309412230.971523%

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 15996 13311 21 21 0.13% 0.16%
B 15996 13311 2420 2420 15.13% 18.18%
C 15996 13311 82 82 0.51% 0.62%
D 15996 13310 3670 3670 22.94% 27.57%

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 181198 583.18 1530 1500 308.1
A 7 3 113553 363.65 1530 1500 308.1
A 13 6 36089 112.25 1530 1500 308.1
B 5 236 7110846 27127.18 1371 1337 262.1
B 5 172 3485004 13292.35 1371 1337 262.1
B 4 232 59132 220.52 1371 1337 262.1
C 15 214 548986 1583.25 1488 1497 345.8
C 0 10 419390 1208.48 1488 1497 345.8
C 14 67 20154 53.95 1488 1497 345.8
D 7 80 9102960 29544.13 1272 1236 308.1
D 8 195 2959622 9602.9 1272 1236 308.1
D 13 249 842847 2731.86 1272 1236 308.1

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