ASTROSAT CZTI

Data Quality Report

Orbit 52905

Creation date: 2025-07-16T18:23:43.693084
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_011T06_9000006484_52905cztM0_level2.fits modeM0/AS1C09_011T06_9000006484_52905cztM0_level2_quad_clean.evt
Size (bytes)826,646,40071,029,440
Size788.4 MB 67.7 MB
Events in quadrant A15,801,3848,470
Events in quadrant B3,133,108657,377
Events in quadrant C4,734,046536,928
Events in quadrant D6,439,678505,767

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0511061
B0137351
C0185753
D0234861

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6334627499.052731%
B63341302.052416%
C63346209.788443%
D633483713.214398%

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 7444 6335 6086 6086 81.76% 96.07%
B 7444 6335 22 22 0.30% 0.35%
C 7444 6335 502 502 6.74% 7.92%
D 7444 6335 779 779 10.46% 12.30%

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 9 191 14333073 258292.4 213 207 55.5
A 12 17 331428 5968.93 213 207 55.5
A 12 194 40774 731.06 213 207 55.5
B 1 255 100747 718.29 664 641 139.4
B 7 0 62741 445.59 664 641 139.4
B 4 158 59336 421.16 664 641 139.4
C 7 80 866694 5050.1 627 620 171.5
C 2 12 367400 2138.7 627 620 171.5
C 1 45 207816 1208.17 627 620 171.5
D 8 176 2132551 11809.18 628 597 180.5
D 15 125 888554 4918.51 628 597 180.5
D 7 96 148255 817.9 628 597 180.5

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