ASTROSAT CZTI

Data Quality Report

Orbit 20260403_A14_083T14_9000006564_level2

Creation date: 2026-04-27T18:43:27.123346
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/AS1A14_083T14_9000006564cztM0_level2.fits modeM0/AS1A14_083T14_9000006564cztM0_level2_quad_clean.evt
Size (bytes)3,140,447,0401,904,883,840
Size2.9 GB 1.8 GB
Events in quadrant A18,938,1588,287,881
Events in quadrant B17,595,1988,943,117
Events in quadrant C18,380,7447,605,214
Events in quadrant D12,822,3345,591,984

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080700
B080740
C080760
D080740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04720
B04720
C04720
D04720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011668320
B011811210
C011712830
D018849940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A397815374739.419705%
B3977684073610.241146%
C397681377079.481720%
D39771215963940.139347%

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 937393 396335 0 0 0.00% 0.00%
B 937392 396004 0 0 0.00% 0.00%
C 937394 396757 0 0 0.00% 0.00%
D 937394 393429 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 14 188 21903 10.35 4978 4598 1672.6
A 9 255 19041 8.63 4978 4598 1672.6
A 14 204 18167 8.11 4978 4598 1672.6
B 2 9 20765 15.09 4668 4428 1082.4
B 2 8 18360 12.87 4668 4428 1082.4
B 3 25 14604 9.4 4668 4428 1082.4
C 15 175 15850 6.73 4920 4485 1688.8
C 2 31 14832 6.13 4920 4485 1688.8
C 15 127 14529 5.95 4920 4485 1688.8
D 6 218 16002 10.22 3669 3252 1247.3
D 15 11 12376 7.31 3669 3252 1247.3
D 8 12 12175 7.15 3669 3252 1247.3

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