ASTROSAT CZTI

Data Quality Report

Orbit 17991

Creation date: 2024-06-27T17:43:32.087958
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/AS1A05_108T02_9000002676_17991cztM0_level2.evt modeM0/AS1A05_108T02_9000002676_17991cztM0_level2_quad_clean.evt
Size (bytes)511,672,32067,006,080
Size488.0 MB 63.9 MB
Events in quadrant A3,529,300401,846
Events in quadrant B3,551,552405,682
Events in quadrant C3,582,238385,231
Events in quadrant D4,394,558384,874

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146702
B0146382
C0147142
D0175003

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6463831.284233%
B6463911.408015%
C64631221.887668%
D64621672.584339%

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 7773 6464 3 3 0.04% 0.05%
B 7773 6463 3 3 0.04% 0.05%
C 7773 6464 0 0 0.00% 0.00%
D 7772 6463 75 75 0.97% 1.16%

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 14 237 43886 241.03 902 887 178.4
A 4 2 18305 97.64 902 887 178.4
A 0 226 7974 39.73 902 887 178.4
B 10 247 20181 115.05 894 875 167.8
B 12 111 18501 105.04 894 875 167.8
B 11 111 16519 93.23 894 875 167.8
C 14 238 132970 678.45 848 858 194.7
C 0 207 71823 364.44 848 858 194.7
C 3 233 64616 327.43 848 858 194.7
D 7 238 444089 2136.69 858 841 207.4
D 11 176 238863 1147.39 858 841 207.4
D 5 222 198668 953.63 858 841 207.4

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