ASTROSAT CZTI

Data Quality Report

Orbit 20170814_A03_133T01_9000001464_level2

Creation date: 2025-11-16T17:47:17.111795
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/AS1A03_133T01_9000001464cztM0_level2.fits modeM0/AS1A03_133T01_9000001464cztM0_level2_quad_clean.evt
Size (bytes)1,011,648,9601,064,240,640
Size964.8 MB 1014.9 MB
Events in quadrant A6,122,9366,500,465
Events in quadrant B5,869,0966,432,392
Events in quadrant C6,014,5106,248,238
Events in quadrant D5,170,6005,591,576

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022240
B022760
C022240
D022760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02289370
B02364510
C02226390
D02885640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10877811081.018588%
B10866712731.171469%
C1087616390.587527%
D10873926542.440707%

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 131230 109098 0 0 0.00% 0.00%
B 131230 109013 0 0 0.00% 0.00%
C 131230 109093 0 0 0.00% 0.00%
D 131230 108844 0 0 0.00% 0.00%

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 0 29 5967 11.25 1594 1489 397.9
A 7 110 5102 9.08 1594 1489 397.9
A 0 30 4739 8.17 1594 1489 397.9
B 2 9 5072 11.9 1551 1476 302.2
B 3 17 4025 8.43 1551 1476 302.2
B 12 226 3972 8.26 1551 1476 302.2
C 12 241 4233 6.72 1588 1475 410.1
C 7 111 3970 6.08 1588 1475 410.1
C 2 191 3926 5.98 1588 1475 410.1
D 3 14 3896 6.46 1475 1340 395.5
D 6 231 3773 6.15 1475 1340 395.5
D 3 31 3615 5.75 1475 1340 395.5

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