ASTROSAT CZTI

Data Quality Report

Orbit 09170

Creation date: 2024-06-27T15:42:14.411810
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/AS1C02_027T01_9000001280_09170cztM0_level2.evt modeM0/AS1C02_027T01_9000001280_09170cztM0_level2_quad_clean.evt
Size (bytes)1,350,653,760323,464,320
Size1.3 GB 308.5 MB
Events in quadrant A10,910,4262,140,378
Events in quadrant B9,910,5832,160,315
Events in quadrant C7,969,5342,164,356
Events in quadrant D10,879,0852,072,891

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0446344
B0414583
C0370583
D0452413

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182853782.067268%
B182854332.368061%
C182851610.880503%
D182857754.238447%

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 20034 18285 126 126 0.63% 0.69%
B 20034 18286 162 162 0.81% 0.89%
C 20034 18286 0 0 0.00% 0.00%
D 20034 18286 566 566 2.83% 3.10%

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 8 5 2273853 5438.11 2076 2028 417.8
A 5 16 308961 734.71 2076 2028 417.8
A 15 236 169283 400.36 2076 2028 417.8
B 8 234 1046518 2646.14 2084 2022 394.7
B 0 85 377241 950.58 2084 2022 394.7
B 10 16 112339 279.48 2084 2022 394.7
C 13 61 15459 28.81 2033 2037 465.9
C 8 128 13815 25.28 2033 2037 465.9
C 8 222 9799 16.66 2033 2037 465.9
D 1 52 1170921 2205.51 1998 1951 530.0
D 2 14 714630 1344.62 1998 1951 530.0
D 13 169 597778 1124.15 1998 1951 530.0

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