ASTROSAT CZTI

Data Quality Report

Orbit 58934

Creation date: 2026-08-19T13:16:22.406135
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_004T07_9000006598_58934cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58934cztM0_level2_quad_clean.evt
Size (bytes)921,663,36074,854,080
Size879.0 MB 71.4 MB
Events in quadrant A14,046,802158,481
Events in quadrant B4,625,208674,733
Events in quadrant C4,109,076614,335
Events in quadrant D10,839,946371,531

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460602
B0179962
C0165912
D0366692

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6408518580.914482%
B64085678.848315%
C64082814.385144%
D6408272142.462547%

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 7562 6407 4751 4751 62.83% 74.15%
B 7563 6408 328 328 4.34% 5.12%
C 7563 6409 223 223 2.95% 3.48%
D 7563 6408 2547 2547 33.68% 39.75%

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 14 238 9877261 91457.13 437 427 108.0
A 15 233 2330254 21573.64 437 427 108.0
A 14 254 66229 609.31 437 427 108.0
B 4 171 1221335 7960.73 722 696 153.3
B 4 236 304575 1981.83 722 696 153.3
B 4 201 86956 562.56 722 696 153.3
C 4 5 849276 4351.76 708 701 195.0
C 12 252 322310 1649.31 708 701 195.0
C 6 223 73002 370.78 708 701 195.0
D 12 110 5833812 33422.99 615 589 174.5
D 11 129 2353716 13482.86 615 589 174.5
D 2 31 56800 322.08 615 589 174.5

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

TCT plots

Parameter TCT0 TCT_healed
Tct