ASTROSAT CZTI

Data Quality Report

Orbit 20170309_G06_077T02_9000001076_level2

Creation date: 2025-11-10T01:13:28.581681
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/AS1G06_077T02_9000001076cztM0_level2.fits modeM0/AS1G06_077T02_9000001076cztM0_level2_quad_clean.evt
Size (bytes)2,370,925,4402,456,412,480
Size2.2 GB 2.3 GB
Events in quadrant A14,179,39014,693,027
Events in quadrant B13,774,31014,834,916
Events in quadrant C14,141,21014,338,366
Events in quadrant D12,155,03612,984,186

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03750
B03750
C03750
D03750

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05410850
B05659750
C05821340
D05905580

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A052120
B052160
C052160
D052160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A25622445811.787889%
B25620869972.730984%
C25622744941.753914%
D25622168092.657471%

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 293577 256226 0 0 0.00% 0.00%
B 293577 256195 0 0 0.00% 0.00%
C 293577 256227 0 0 0.00% 0.00%
D 293577 256128 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 13565 10.91 3685 3428 929.3
A 7 110 12019 9.25 3685 3428 929.3
A 0 30 10736 7.86 3685 3428 929.3
B 2 9 11990 11.81 3628 3431 725.0
B 12 226 9365 8.18 3628 3431 725.0
B 3 17 9328 8.13 3628 3431 725.0
C 1 80 10505 7.13 3740 3447 989.1
C 1 81 10336 6.96 3740 3447 989.1
C 12 241 9961 6.59 3740 3447 989.1
D 7 3 8905 6.25 3473 3146 921.8
D 7 5 8831 6.17 3473 3146 921.8
D 6 231 8791 6.12 3473 3146 921.8

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