ASTROSAT CZTI

Data Quality Report

Orbit 58729

Creation date: 2026-08-05T18:17:45.418048
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_004T06_9000006594_58729cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58729cztM0_level2_quad_clean.evt
Size (bytes)452,571,840102,862,080
Size431.6 MB 98.1 MB
Events in quadrant A3,727,612684,047
Events in quadrant B4,032,689717,153
Events in quadrant C3,205,840658,696
Events in quadrant D5,264,049586,456

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155382
B0165343
C0142372
D0201102

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0191

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67191722.559905%
B67183535.254540%
C6718941.399226%
D67185367.978565%

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 7839 6719 112 112 1.43% 1.67%
B 7838 6718 210 210 2.68% 3.13%
C 7838 6718 12 12 0.15% 0.18%
D 7838 6718 511 511 6.52% 7.61%

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 14 431373 2254.4 779 762 191.0
A 10 17 189609 988.68 779 762 191.0
A 8 26 31857 162.79 779 762 191.0
B 4 201 353660 2192.33 753 726 161.0
B 6 255 159628 987.06 753 726 161.0
B 8 234 129536 800.13 753 726 161.0
C 14 254 96117 465.03 751 746 205.1
C 12 252 50400 242.12 751 746 205.1
C 6 223 29182 138.66 751 746 205.1
D 11 129 2028288 9692.87 740 706 209.2
D 2 249 87357 414.24 740 706 209.2
D 3 12 68289 323.08 740 706 209.2

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