ASTROSAT CZTI

Data Quality Report

Orbit 58889

Creation date: 2026-08-16T12:17:35.281529
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_58889cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58889cztM0_level2_quad_clean.evt
Size (bytes)491,682,24095,253,120
Size468.9 MB 90.8 MB
Events in quadrant A3,049,708651,398
Events in quadrant B4,246,846648,827
Events in quadrant C3,623,813620,428
Events in quadrant D6,786,930520,556

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131932
B0168272
C0150863
D0245912

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6347530.835040%
B63486149.672338%
C63471382.174256%
D634783513.155822%

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 7527 6348 10 10 0.13% 0.16%
B 7528 6349 390 390 5.18% 6.14%
C 7527 6348 132 132 1.75% 2.08%
D 7527 6348 847 847 11.25% 13.34%

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 98770 534.75 736 716 183.4
A 15 233 68820 371.42 736 716 183.4
A 0 24 12213 62.7 736 716 183.4
B 6 255 1175747 8068.82 680 654 145.6
B 4 236 79010 538.03 680 654 145.6
B 5 185 75767 515.77 680 654 145.6
C 12 252 643998 3315.23 705 696 194.0
C 4 5 160873 825.47 705 696 194.0
C 6 223 46539 236.25 705 696 194.0
D 11 129 1959600 10236.52 668 639 191.4
D 12 110 1866797 9751.58 668 639 191.4
D 6 239 79172 410.37 668 639 191.4

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

TCT plots

Parameter TCT0 TCT_healed
Tct