ASTROSAT CZTI

Data Quality Report

Orbit 54242

Creation date: 2025-10-08T11:32:22.405786
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/AS1C09_004T08_9000006514_54242cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54242cztM0_level2_quad_clean.evt
Size (bytes)1,385,438,40059,175,360
Size1.3 GB 56.4 MB
Events in quadrant A5,778,682628,134
Events in quadrant B17,303,03552,704
Events in quadrant C16,214,089266,782
Events in quadrant D11,472,327367,961

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218770
B0560510
C0526710
D0387730

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A671685412.715902%
B67166716100.000000%
C6715578586.150410%
D6716357753.260870%

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 7581 6717 628 628 8.28% 9.35%
B 7580 6715 6600 6600 87.07% 98.29%
C 7579 6714 5313 5313 70.10% 79.13%
D 7580 6715 2895 2895 38.19% 43.11%

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 7 29 2802005 16598.28 683 667 168.8
A 15 174 140265 827.14 683 667 168.8
A 13 248 34010 197.56 683 667 168.8
B 5 172 16896546 1026338.43 70 68 16.5
B 5 236 45075 2733.85 70 68 16.5
B 4 171 22341 1352.92 70 68 16.5
C 1 241 9792208 114371.94 308 303 85.6
C 1 29 4903498 57270.56 308 303 85.6
C 12 252 121275 1412.98 308 303 85.6
D 8 176 9365073 74498.36 446 427 125.7
D 8 160 64027 505.96 446 427 125.7
D 10 181 63462 501.46 446 427 125.7

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