ASTROSAT CZTI

Data Quality Report

Orbit 57802

Creation date: 2026-06-04T10:08:40.759542
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_083T16_9000006580_57802cztM0_level2.fits modeM0/AS1A14_083T16_9000006580_57802cztM0_level2_quad_clean.evt
Size (bytes)614,407,68096,546,240
Size585.9 MB 92.1 MB
Events in quadrant A3,756,777649,717
Events in quadrant B4,897,325709,156
Events in quadrant C8,909,326516,195
Events in quadrant D4,650,886572,128

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162182
B0192672
C0312822
D0185952

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68262593.794316%
B68261692.475828%
C6826158923.278640%
D68263735.464401%

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 7876 6826 160 160 2.03% 2.34%
B 7876 6826 41 41 0.52% 0.60%
C 7876 6826 1447 1447 18.37% 21.20%
D 7876 6827 382 382 4.85% 5.60%

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 873420 4942.85 712 694 176.6
A 3 128 68677 385.03 712 694 176.6
A 3 14 44413 247.61 712 694 176.6
B 4 80 1632991 10750.37 716 692 151.8
B 0 63 131367 860.63 716 692 151.8
B 2 249 56465 367.32 716 692 151.8
C 9 38 4151156 23495.28 651 645 176.7
C 15 224 1952592 11049.61 651 645 176.7
C 14 254 88443 497.01 651 645 176.7
D 8 160 1593846 8130.52 690 657 196.0
D 12 0 134476 682.92 690 657 196.0
D 3 12 92938 470.94 690 657 196.0

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