ASTROSAT CZTI

Data Quality Report

Orbit 58662

Creation date: 2026-08-01T06:38:17.258388
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_58662cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58662cztM0_level2_quad_clean.evt
Size (bytes)621,843,840105,192,000
Size593.0 MB 100.3 MB
Events in quadrant A4,460,457711,657
Events in quadrant B3,747,787778,303
Events in quadrant C5,297,755669,998
Events in quadrant D8,922,966496,447

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187700
B0165940
C0210959
D03185314

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75962483.264876%
B7596520.684571%
C75945086.689492%
D7593204326.906361%

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 7596 7596 246 246 3.24% 3.24%
B 7596 7596 18 18 0.24% 0.24%
C 7595 7595 410 410 5.40% 5.40%
D 7595 7593 2050 2050 26.99% 27.00%

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 10 251 576678 2903.94 813 792 198.3
A 10 17 467280 2352.3 813 792 198.3
A 4 249 239472 1203.56 813 792 198.3
B 0 171 103872 582.96 819 787 176.8
B 5 172 93169 522.43 819 787 176.8
B 5 185 92064 516.18 819 787 176.8
C 12 254 768538 3547.05 785 777 216.5
C 15 164 550291 2538.75 785 777 216.5
C 15 147 536509 2475.08 785 777 216.5
D 11 129 3672028 18532.21 695 665 198.1
D 8 240 1094360 5520.73 695 665 198.1
D 2 249 828413 4178.28 695 665 198.1

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