ASTROSAT CZTI

Data Quality Report

Orbit 57907

Creation date: 2026-06-11T11:28:44.272988
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_57907cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57907cztM0_level2_quad_clean.evt
Size (bytes)492,154,560108,835,200
Size469.4 MB 103.8 MB
Events in quadrant A3,856,778715,033
Events in quadrant B4,206,543758,928
Events in quadrant C6,128,274646,711
Events in quadrant D3,431,014641,937

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174830
B0182620
C0235780
D0159420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7661590.770134%
B76622333.040981%
C76625286.891151%
D7662210.274080%

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 7661 7661 33 33 0.43% 0.43%
B 7662 7662 125 125 1.63% 1.63%
C 7662 7662 418 418 5.46% 5.46%
D 7662 7662 19 19 0.25% 0.25%

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 8 9 714963 3599.15 803 781 198.4
A 7 64 20376 98.75 803 781 198.4
A 10 251 13625 64.73 803 781 198.4
B 3 238 619975 3630.45 794 761 170.6
B 9 251 141103 822.83 794 761 170.6
B 5 185 135077 787.5 794 761 170.6
C 15 224 2362471 11384.38 766 757 207.5
C 15 208 615004 2960.91 766 757 207.5
C 12 252 48905 232.09 766 757 207.5
D 12 248 115248 522.47 780 740 219.2
D 3 12 61083 275.33 780 740 219.2
D 5 173 55016 247.64 780 740 219.2

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