ASTROSAT CZTI

Data Quality Report

Orbit 22135

Creation date: 2024-06-27T18:37:17.390951
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_145T01_9000003278_22135cztM0_level2.evt modeM0/AS1T03_145T01_9000003278_22135cztM0_level2_quad_clean.evt
Size (bytes)616,187,520106,784,640
Size587.6 MB 101.8 MB
Events in quadrant A3,576,972707,243
Events in quadrant B3,643,252717,068
Events in quadrant C3,928,750681,798
Events in quadrant D7,011,246613,320

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153982
B0155422
C0164342
D0257342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7389901.218027%
B73891221.651103%
C73891441.948843%
D7389126917.174178%

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 7914 7390 2 2 0.03% 0.03%
B 7914 7390 1 1 0.01% 0.01%
C 7914 7390 0 0 0.00% 0.00%
D 7914 7390 1017 1017 12.85% 13.76%

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 5 16 48434 257.67 915 896 184.5
A 13 254 13361 67.56 915 896 184.5
A 0 226 7849 37.69 915 896 184.5
B 4 216 38165 214.94 910 886 173.4
B 4 173 26092 145.33 910 886 173.4
B 12 111 21172 116.96 910 886 173.4
C 9 54 402468 1986.02 869 874 202.2
C 14 238 136474 670.59 869 874 202.2
C 13 61 6024 25.47 869 874 202.2
D 1 52 2710082 13633.94 817 792 198.7
D 2 133 865829 4353.12 817 792 198.7
D 11 176 133352 667.08 817 792 198.7

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