ASTROSAT CZTI

Data Quality Report

Orbit 51601

Creation date: 2025-04-13T03:16:17.458295
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/AS1A13_037T05_9000006460_51601cztM0_level2.fits modeM0/AS1A13_037T05_9000006460_51601cztM0_level2_quad_clean.evt
Size (bytes)843,465,600103,178,880
Size804.4 MB 98.4 MB
Events in quadrant A11,056,425541,781
Events in quadrant B5,500,772805,005
Events in quadrant C8,077,355574,729
Events in quadrant D5,963,708642,474

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0384281
B0217651
C0297811
D0234191

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8058266433.060313%
B80594555.645862%
C8059196524.382678%
D80597479.269140%

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 8073 8059 1976 1976 24.48% 24.52%
B 8074 8060 141 141 1.75% 1.75%
C 8074 8060 1218 1218 15.09% 15.11%
D 8074 8060 618 618 7.65% 7.67%

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 12 250 3038058 15949.5 771 752 190.4
A 7 160 1725838 9058.77 771 752 190.4
A 4 175 1205314 6325.39 771 752 190.4
B 5 185 535845 2837.44 883 853 188.5
B 5 172 331036 1751.19 883 853 188.5
B 4 174 253743 1341.25 883 853 188.5
C 15 198 2856781 14082.81 742 735 202.8
C 13 3 979850 4827.89 742 735 202.8
C 1 243 397688 1957.33 742 735 202.8
D 12 6 1051535 4609.69 831 802 227.9
D 8 176 385655 1688.4 831 802 227.9
D 7 159 254763 1114.16 831 802 227.9

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