ASTROSAT CZTI

Data Quality Report

Orbit 20160421_G05_238T03_9000000424_level2

Creation date: 2025-10-29T00:58:58.007320
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/AS1G05_238T03_9000000424cztM0_level2.fits modeM0/AS1G05_238T03_9000000424cztM0_level2_quad_clean.evt
Size (bytes)844,090,560989,398,080
Size805.0 MB 943.6 MB
Events in quadrant A5,066,2546,205,544
Events in quadrant B4,807,0446,001,957
Events in quadrant C4,891,7065,827,735
Events in quadrant D4,183,9805,318,025

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01984500
B02312750
C02021900
D02316240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05120
B05120
C05120
D05120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019760
B019760
C019760
D019760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A964841950.202106%
B9648419432.013805%
C964844820.499565%
D9648417421.805481%

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 145845 96484 0 0 0.00% 0.00%
B 145845 96479 0 0 0.00% 0.00%
C 145845 96474 0 0 0.00% 0.00%
D 145845 96473 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 4910 10.88 1320 1235 337.7
A 7 110 4439 9.49 1320 1235 337.7
A 9 19 3911 7.92 1320 1235 337.7
B 2 9 4222 12.29 1271 1216 244.6
B 12 226 3673 10.05 1271 1216 244.6
B 5 128 3638 9.9 1271 1216 244.6
C 1 81 3796 7.62 1293 1204 340.0
C 1 80 3757 7.51 1293 1204 340.0
C 9 188 3388 6.42 1293 1204 340.0
D 11 82 3946 9.02 1198 1091 316.7
D 6 231 3261 6.85 1198 1091 316.7
D 6 44 3157 6.52 1198 1091 316.7

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