ASTROSAT CZTI

Data Quality Report

Orbit 55362

Creation date: 2025-12-22T06:28:21.724974
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_009T01_9000006534_55362cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55362cztM0_level2_quad_clean.evt
Size (bytes)480,781,440109,598,400
Size458.5 MB 104.5 MB
Events in quadrant A4,159,589716,900
Events in quadrant B3,864,006756,542
Events in quadrant C4,041,094685,085
Events in quadrant D5,141,830631,886

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179042
B0172132
C0177622
D0208032

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7597811.066210%
B75981942.553304%
C7598991.302974%
D75983294.330087%

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 8887 7599 39 39 0.44% 0.51%
B 8888 7600 84 84 0.95% 1.11%
C 8888 7600 62 62 0.70% 0.82%
D 8888 7600 248 248 2.79% 3.26%

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 12 115 683764 3402.07 814 793 200.8
A 0 8 162647 806.24 814 793 200.8
A 4 3 44608 218.25 814 793 200.8
B 5 185 389674 2252.04 806 775 172.7
B 0 199 166242 958.19 806 775 172.7
B 9 254 52195 297.76 806 775 172.7
C 12 250 162564 741.08 801 792 218.3
C 7 64 153632 700.16 801 792 218.3
C 13 3 142226 647.91 801 792 218.3
D 11 129 685622 3024.75 789 752 226.4
D 2 31 305192 1344.57 789 752 226.4
D 5 38 213286 938.66 789 752 226.4

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