ASTROSAT CZTI

Data Quality Report

Orbit 11288

Creation date: 2024-06-27T16:10:48.543406
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/AS1A04_144T01_9000001652_11288cztM0_level2.evt modeM0/AS1A04_144T01_9000001652_11288cztM0_level2_quad_clean.evt
Size (bytes)659,609,280100,650,240
Size629.1 MB 96.0 MB
Events in quadrant A6,725,124616,083
Events in quadrant B4,343,317685,410
Events in quadrant C3,193,495681,672
Events in quadrant D5,278,650615,131

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244713
B0173832
C0137922
D0199862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6438117018.173346%
B64384406.834421%
C6438640.994098%
D64384537.036347%

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 8888 6440 832 832 9.36% 12.92%
B 8888 6440 181 181 2.04% 2.81%
C 8888 6440 1 1 0.01% 0.02%
D 8888 6440 280 280 3.15% 4.35%

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 3376141 21876.94 759 743 154.3
A 8 15 140407 905.2 759 743 154.3
A 1 162 80528 517.11 759 743 154.3
B 4 239 1025527 6666.14 819 803 153.7
B 0 219 52829 338.44 819 803 153.7
B 15 204 21474 134.47 819 803 153.7
C 13 61 5925 27.06 816 822 188.6
C 12 4 5653 25.62 816 822 188.6
C 9 54 4066 17.2 816 822 188.6
D 12 157 632068 3351.49 785 765 188.4
D 10 253 422071 2236.65 785 765 188.4
D 1 52 407682 2160.26 785 765 188.4

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