ASTROSAT CZTI

Data Quality Report

Orbit 58497

Creation date: 2026-07-21T03:32:59.156583
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_044T04_9000006592_58497cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58497cztM0_level2_quad_clean.evt
Size (bytes)416,036,16098,136,000
Size396.8 MB 93.6 MB
Events in quadrant A3,479,266647,736
Events in quadrant B3,748,079697,761
Events in quadrant C4,007,684598,595
Events in quadrant D3,665,409579,450

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147932
B0155222
C0163542
D0153952

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64241251.945828%
B64241722.677460%
C64243235.028020%
D64241151.790162%

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 7614 6425 77 77 1.01% 1.20%
B 7614 6425 81 81 1.06% 1.26%
C 7614 6425 251 251 3.30% 3.91%
D 7614 6425 97 97 1.27% 1.51%

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 10 17 451809 2526.51 720 703 178.5
A 10 143 146406 816.04 720 703 178.5
A 3 14 14987 80.0 720 703 178.5
B 5 185 396801 2598.11 716 691 152.5
B 2 249 246115 1609.75 716 691 152.5
B 4 171 80289 522.09 716 691 152.5
C 13 3 663244 3483.68 682 677 190.2
C 6 223 257770 1351.76 682 677 190.2
C 12 252 140102 733.08 682 677 190.2
D 2 120 172900 872.55 689 656 197.4
D 8 240 161809 816.37 689 656 197.4
D 12 248 154715 780.43 689 656 197.4

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