ASTROSAT CZTI

Data Quality Report

Orbit 53004

Creation date: 2025-07-16T13:17:54.069117
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_011T07_9000006488_53004cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53004cztM0_level2_quad_clean.evt
Size (bytes)978,382,08058,648,320
Size933.1 MB 55.9 MB
Events in quadrant A13,385,99893,239
Events in quadrant B5,249,188573,716
Events in quadrant C6,555,600440,095
Events in quadrant D10,588,954272,146

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0435995
B0195171
C0233481
D0354081

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5668495887.473536%
B56693065.397777%
C5669105518.609984%
D5669294751.984477%

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 6808 5668 4280 4280 62.87% 75.51%
B 6809 5670 246 246 3.61% 4.34%
C 6809 5670 951 951 13.97% 16.77%
D 6809 5670 2422 2422 35.57% 42.72%

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 10907506 127576.91 337 327 85.5
A 15 190 543122 6348.86 337 327 85.5
A 0 8 305018 3563.85 337 327 85.5
B 10 254 2763684 22797.63 570 553 121.2
B 4 81 51448 419.92 570 553 121.2
B 5 172 48043 391.82 570 553 121.2
C 9 38 1495614 10239.77 522 515 146.0
C 15 224 927245 6347.08 522 515 146.0
C 1 241 860561 5890.36 522 515 146.0
D 2 62 5217438 40285.07 443 423 129.5
D 8 176 1868164 14422.44 443 423 129.5
D 11 176 830784 6411.93 443 423 129.5

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