ASTROSAT CZTI

Data Quality Report

Orbit 26310

Creation date: 2024-06-27T19:27:16.004779
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/AS1A09_143T03_9000003794_26310cztM0_level2.evt modeM0/AS1A09_143T03_9000003794_26310cztM0_level2_quad_clean.evt
Size (bytes)651,317,760113,388,480
Size621.1 MB 108.1 MB
Events in quadrant A4,668,026688,958
Events in quadrant B4,696,420712,118
Events in quadrant C4,916,745678,649
Events in quadrant D4,776,284671,679

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201040
B0201220
C0207190
D0207630

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9847630.639789%
B9847760.771809%
C98481761.787165%
D9848780.792039%

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 10422 9848 0 0 0.00% 0.00%
B 10422 9848 0 0 0.00% 0.00%
C 10423 9849 59 59 0.57% 0.60%
D 10423 9849 35 35 0.34% 0.36%

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 0 13 46802 188.12 1198 1170 242.6
A 13 254 15283 58.18 1198 1170 242.6
A 3 137 11295 41.74 1198 1170 242.6
B 12 111 28324 118.28 1192 1163 229.6
B 11 111 25464 105.82 1192 1163 229.6
B 14 111 22897 94.64 1192 1163 229.6
C 2 16 198534 727.96 1153 1159 271.1
C 14 238 182944 670.46 1153 1159 271.1
C 3 233 45584 163.85 1153 1159 271.1
D 11 176 167387 595.52 1172 1146 279.1
D 1 52 91472 323.57 1172 1146 279.1
D 8 195 42006 146.37 1172 1146 279.1

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