ASTROSAT CZTI

Data Quality Report

Orbit 41928

Creation date: 2024-06-27T22:34:37.256945
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/AS1A12_099T03_9000005720_41928cztM0_level2.fits modeM0/AS1A12_099T03_9000005720_41928cztM0_level2_quad_clean.evt
Size (bytes)705,081,60073,702,080
Size672.4 MB 70.3 MB
Events in quadrant A4,436,639577,725
Events in quadrant B3,224,673611,544
Events in quadrant C3,545,449576,807
Events in quadrant D14,457,85073,152

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167771
B0133521
C0139451
D0465475

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56054077.261374%
B56061262.247592%
C56062033.621120%
D5605498388.902765%

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 7009 5607 295 295 4.21% 5.26%
B 7010 5608 96 96 1.37% 1.71%
C 7010 5608 191 191 2.72% 3.41%
D 7009 5607 4992 4992 71.22% 89.03%

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 14 24 1584734 12940.26 593 582 122.4
A 10 83 487816 3980.0 593 582 122.4
A 2 79 29516 236.35 593 582 122.4
B 0 229 612094 5248.59 595 578 116.5
B 0 156 83162 708.81 595 578 116.5
B 5 255 62830 534.3 595 578 116.5
C 0 10 513576 3807.39 575 578 134.7
C 14 254 303217 2246.14 575 578 134.7
C 4 254 233603 1729.47 575 578 134.7
D 12 79 13294817 212350.15 251 244 62.6
D 13 249 87679 1396.57 251 244 62.6
D 1 52 37938 602.07 251 244 62.6

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