ASTROSAT CZTI

Data Quality Report

Orbit 53647

Creation date: 2025-08-29T11:48:11.198593
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_022T05_9000006504_53647cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53647cztM0_level2_quad_clean.evt
Size (bytes)917,081,28072,809,280
Size874.6 MB 69.4 MB
Events in quadrant A5,877,436564,312
Events in quadrant B5,755,090625,084
Events in quadrant C15,256,23696,022
Events in quadrant D6,569,950477,790

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218591
B0213191
C0495681
D0238831

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A631978012.343725%
B63194977.865169%
C6320547386.598101%
D6320112617.816456%

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 7129 6320 523 523 7.34% 8.28%
B 7129 6320 357 357 5.01% 5.65%
C 7129 6319 5017 5017 70.37% 79.40%
D 7130 6321 821 821 11.51% 12.99%

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 3 78 1933255 11465.23 672 655 168.6
A 15 174 519244 3076.55 672 655 168.6
A 4 191 443628 2627.96 672 655 168.6
B 4 206 1621210 11423.92 667 645 141.9
B 5 172 651840 4590.5 667 645 141.9
B 7 0 256834 1805.96 667 645 141.9
C 1 241 10589823 117257.75 321 318 90.3
C 15 224 1444754 15994.26 321 318 90.3
C 13 3 1140347 12623.56 321 318 90.3
D 15 93 2256680 12405.12 626 597 181.9
D 8 176 700024 3845.82 626 597 181.9
D 3 224 228645 1253.93 626 597 181.9

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