ASTROSAT CZTI

Data Quality Report

Orbit 24813

Creation date: 2024-06-27T19:10:10.736321
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_197T01_9000003626_24813cztM0_level2.evt modeM0/AS1T03_197T01_9000003626_24813cztM0_level2_quad_clean.evt
Size (bytes)520,557,12080,844,480
Size496.4 MB 77.1 MB
Events in quadrant A3,629,007492,916
Events in quadrant B4,345,439493,434
Events in quadrant C3,591,846477,049
Events in quadrant D3,698,848472,459

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153282
B0174433
C0151922
D0157052

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73541952.651618%
B73535197.058344%
C73532223.019176%
D73531802.447980%

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 7814 7356 3 3 0.04% 0.04%
B 7813 7355 247 247 3.16% 3.36%
C 7813 7355 0 0 0.00% 0.00%
D 7813 7355 28 28 0.36% 0.38%

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 96 15279 76.28 935 915 188.3
A 11 208 12336 60.66 935 915 188.3
A 13 254 11547 56.46 935 915 188.3
B 3 64 788575 4564.35 900 875 172.6
B 12 111 21815 121.34 900 875 172.6
B 11 111 19881 110.13 900 875 172.6
C 14 238 138730 669.27 882 886 206.0
C 7 247 13986 63.6 882 886 206.0
C 13 61 6179 25.7 882 886 206.0
D 8 195 173151 785.44 903 876 219.3
D 2 120 66803 300.57 903 876 219.3
D 1 52 30168 133.55 903 876 219.3

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