ASTROSAT CZTI

Data Quality Report

Orbit 52144

Creation date: 2025-05-19T17:27:55.978513
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_011T07_9000006470_52144cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52144cztM0_level2_quad_clean.evt
Size (bytes)2,915,138,880270,645,120
Size2.7 GB 258.1 MB
Events in quadrant A13,557,2502,153,194
Events in quadrant B14,141,0352,254,226
Events in quadrant C26,485,1661,649,449
Events in quadrant D51,930,617533,512

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04760
B04760
C04760
D04760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0562264
B0582004
C0950824
D01701924

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A232725252.255930%
B2327310554.533150%
C23273500221.492717%
D232731778976.436214%

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 25487 23276 293 293 1.15% 1.26%
B 25488 23277 621 621 2.44% 2.67%
C 25488 23276 4023 4023 15.78% 17.28%
D 25488 23273 16747 16747 65.71% 71.96%

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 3 114 1080027 1772.98 2456 2389 607.8
A 14 254 978698 1606.27 2456 2389 607.8
A 4 3 398230 651.26 2456 2389 607.8
B 4 81 2007089 3988.73 2405 2322 502.6
B 4 171 338209 668.29 2405 2322 502.6
B 0 171 319267 630.6 2405 2322 502.6
C 15 224 10371501 17165.29 2169 2147 604.1
C 14 245 1638007 2707.98 2169 2147 604.1
C 1 45 1041836 1721.09 2169 2147 604.1
D 6 42 36297224 88021.69 1447 1385 412.4
D 15 94 2040418 4944.9 1447 1385 412.4
D 11 176 1365669 3308.55 1447 1385 412.4

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