ASTROSAT CZTI

Data Quality Report

Orbit 59216

Creation date: 2026-09-07T13:22:05.740821
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/AS1T05_271T01_9000006604_59216cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59216cztM0_level2_quad_clean.evt
Size (bytes)536,077,440101,096,640
Size511.2 MB 96.4 MB
Events in quadrant A4,600,026658,784
Events in quadrant B3,303,022727,917
Events in quadrant C4,100,304643,058
Events in quadrant D7,285,523533,282

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190300
B0150310
C0173700
D0266240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71482703.777280%
B7149700.979158%
C71491952.727654%
D7149101214.155826%

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 7148 7148 200 200 2.80% 2.80%
B 7149 7149 16 16 0.22% 0.22%
C 7149 7149 179 179 2.50% 2.50%
D 7149 7149 846 846 11.83% 11.83%

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 1308759 6890.59 770 748 189.8
A 0 24 185337 972.41 770 748 189.8
A 10 251 100284 524.35 770 748 189.8
B 4 201 60374 357.43 770 739 166.8
B 5 248 41683 245.41 770 739 166.8
B 5 185 37174 218.38 770 739 166.8
C 15 147 771138 3777.44 749 744 203.9
C 12 252 125631 612.35 749 744 203.9
C 3 233 76890 373.36 749 744 203.9
D 12 110 3998730 19851.89 714 682 201.4
D 11 129 321963 1595.29 714 682 201.4
D 8 240 47141 230.69 714 682 201.4

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