ASTROSAT CZTI

Data Quality Report

Orbit 57863

Creation date: 2026-06-08T12:30:23.709263
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_125T11_9000006582_57863cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57863cztM0_level2_quad_clean.evt
Size (bytes)724,691,520112,440,960
Size691.1 MB 107.2 MB
Events in quadrant A3,811,505787,287
Events in quadrant B4,263,465829,980
Events in quadrant C13,082,366506,585
Events in quadrant D5,015,017695,373

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176672
B0189072
C0447123
D0205362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84191732.054876%
B84203504.156770%
C8419328839.054520%
D84191802.138021%

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 8574 8420 4 4 0.05% 0.05%
B 8575 8421 64 64 0.75% 0.76%
C 8574 8420 2765 2765 32.25% 32.84%
D 8574 8420 10 10 0.12% 0.12%

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 7 64 130705 576.8 920 898 225.0
A 10 251 80424 353.37 920 898 225.0
A 3 128 23222 99.2 920 898 225.0
B 2 249 228676 1177.84 910 875 193.4
B 10 247 120744 619.78 910 875 193.4
B 10 246 112705 578.22 910 875 193.4
C 9 38 6531407 30640.8 793 784 213.1
C 15 224 3136834 14713.92 793 784 213.1
C 12 252 70832 328.66 793 784 213.1
D 12 110 1035974 4168.29 891 850 248.3
D 13 66 157632 631.34 891 850 248.3
D 3 12 108498 433.48 891 850 248.3

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