ASTROSAT CZTI

Data Quality Report

Orbit 24566

Creation date: 2024-06-27T19:07:21.329234
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/AS1T03_183T01_9000003610_24566cztM0_level2.evt modeM0/AS1T03_183T01_9000003610_24566cztM0_level2_quad_clean.evt
Size (bytes)636,955,200119,324,160
Size607.4 MB 113.8 MB
Events in quadrant A3,136,679826,404
Events in quadrant B3,235,718835,906
Events in quadrant C4,170,604769,554
Events in quadrant D8,296,368716,734

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136753
B0138702
C0170212
D0293472

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6670290.434783%
B6670460.689655%
C66701862.788606%
D667066810.014993%

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 7590 6671 0 0 0.00% 0.00%
B 7590 6671 3 3 0.04% 0.04%
C 7590 6671 18 18 0.24% 0.27%
D 7590 6671 719 719 9.47% 10.78%

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 13 254 10755 61.11 813 797 162.9
A 3 137 7282 39.8 813 797 162.9
A 0 226 7023 38.21 813 797 162.9
B 12 17 38195 243.75 811 793 153.4
B 12 111 18186 113.35 811 793 153.4
B 11 111 15841 98.07 811 793 153.4
C 7 247 846811 4800.12 765 772 176.3
C 0 239 124603 702.57 765 772 176.3
C 14 238 124524 702.12 765 772 176.3
D 8 195 3215431 17528.06 755 734 183.4
D 1 52 1613758 8794.98 755 734 183.4
D 12 218 328220 1785.61 755 734 183.4

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