ASTROSAT CZTI

Data Quality Report

Orbit 50505

Creation date: 2025-01-29T05:22:26.054771
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/AS1T05_239T01_9000006444_50505cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50505cztM0_level2_quad_clean.evt
Size (bytes)711,889,92088,750,080
Size678.9 MB 84.6 MB
Events in quadrant A5,886,032578,922
Events in quadrant B3,405,948693,170
Events in quadrant C10,417,004417,742
Events in quadrant D6,125,076531,284

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220542
B0147842
C0356272
D0227722

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A668876011.363636%
B6688821.226077%
C6688244436.543062%
D668866910.002990%

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 7758 6689 759 759 9.78% 11.35%
B 7758 6689 49 49 0.63% 0.73%
C 7758 6688 2271 2271 29.27% 33.96%
D 7758 6688 621 621 8.00% 9.29%

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 10 253 1930995 11322.56 689 674 170.5
A 3 130 328796 1924.64 689 674 170.5
A 12 250 208891 1221.32 689 674 170.5
B 4 206 154163 1004.67 717 693 152.8
B 7 0 89321 580.19 717 693 152.8
B 8 128 49356 318.56 717 693 152.8
C 12 249 2177399 13152.13 594 589 165.5
C 1 60 2153966 13010.55 594 589 165.5
C 15 235 1174459 7092.44 594 589 165.5
D 6 42 1031881 5539.98 665 642 186.1
D 7 61 497179 2667.47 665 642 186.1
D 15 184 284135 1522.97 665 642 186.1

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