ASTROSAT CZTI

Data Quality Report

Orbit 58965

Creation date: 2026-08-21T15:28:19.994553
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_58965cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58965cztM0_level2_quad_clean.evt
Size (bytes)685,892,16089,415,360
Size654.1 MB 85.3 MB
Events in quadrant A3,954,421663,053
Events in quadrant B7,493,338580,280
Events in quadrant C3,689,757633,115
Events in quadrant D9,728,936360,861

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161972
B0268752
C0158092
D0334422

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67371952.894463%
B6737169725.189253%
C67372343.473356%
D6737282241.888081%

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 7672 6738 71 71 0.93% 1.05%
B 7672 6738 1013 1013 13.20% 15.03%
C 7672 6738 127 127 1.66% 1.88%
D 7672 6738 2403 2403 31.32% 35.66%

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 712750 3761.88 778 759 189.3
A 3 94 170570 897.21 778 759 189.3
A 4 3 18885 95.77 778 759 189.3
B 2 249 2478374 16620.49 693 667 149.1
B 6 255 1892733 12692.01 693 667 149.1
B 10 247 107345 715.6 693 667 149.1
C 12 252 624890 3094.96 742 736 201.7
C 2 255 53170 260.0 742 736 201.7
C 12 250 28941 139.86 742 736 201.7
D 12 110 6591132 38245.08 605 577 172.3
D 2 249 211636 1224.78 605 577 172.3
D 7 222 162509 939.69 605 577 172.3

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