ASTROSAT CZTI

Data Quality Report

Orbit 53265

Creation date: 2025-08-03T05:03:16.829436
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/AS1C09_011T08_9000006492_53265cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53265cztM0_level2_quad_clean.evt
Size (bytes)699,330,24079,130,880
Size666.9 MB 75.5 MB
Events in quadrant A5,353,674533,283
Events in quadrant B5,143,229591,458
Events in quadrant C10,337,907348,110
Events in quadrant D4,589,828505,761

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0199151
B0194501
C0348861
D0178001

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A597470711.834617%
B59745479.156344%
C5974260043.521928%
D59744116.879813%

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 7114 5974 691 691 9.71% 11.57%
B 7114 5975 442 442 6.21% 7.40%
C 7114 5975 2556 2556 35.93% 42.78%
D 7113 5974 381 381 5.36% 6.38%

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 3 62 2115428 13981.09 602 586 151.3
A 7 206 336731 2222.23 602 586 151.3
A 3 27 229283 1511.9 602 586 151.3
B 4 81 1147290 8788.28 610 589 130.5
B 2 249 545909 4179.31 610 589 130.5
B 10 254 334115 2556.13 610 589 130.5
C 9 38 5343428 36959.85 523 517 144.6
C 10 22 1061400 7338.71 523 517 144.6
C 15 224 815914 5640.55 523 517 144.6
D 10 172 817492 4787.17 598 571 170.6
D 13 170 527980 3090.63 598 571 170.6
D 12 3 313062 1831.2 598 571 170.6

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