ASTROSAT CZTI

Data Quality Report

Orbit 52304

Creation date: 2025-07-22T15:12:33.750454
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_011T05_9000006474_52304cztM0_level2.fits modeM0/AS1C09_011T05_9000006474_52304cztM0_level2_quad_clean.evt
Size (bytes)738,388,80076,766,400
Size704.2 MB 73.2 MB
Events in quadrant A3,247,488592,772
Events in quadrant B4,585,338594,659
Events in quadrant C11,717,538258,823
Events in quadrant D7,300,970444,612

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141781
B0180991
C0390941
D0260501

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6214811.303508%
B62144266.855488%
C6214356257.322176%
D6214126420.341165%

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 7164 6215 59 59 0.82% 0.95%
B 7164 6214 288 288 4.02% 4.63%
C 7163 6213 3282 3282 45.82% 52.82%
D 7164 6215 1294 1294 18.06% 20.82%

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 4 249 271396 1666.43 637 620 162.5
A 5 240 139537 854.93 637 620 162.5
A 11 3 68185 415.81 637 620 162.5
B 4 171 963951 7344.47 616 595 131.2
B 0 216 502107 3823.45 616 595 131.2
B 12 32 190543 1448.13 616 595 131.2
C 15 224 3566856 32033.08 398 394 111.3
C 15 178 2353664 21136.49 398 394 111.3
C 0 161 1735220 15581.78 398 394 111.3
D 6 42 3673916 22794.13 555 530 161.2
D 7 96 385278 2387.44 555 530 161.2
D 8 176 303441 1879.63 555 530 161.2

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