ASTROSAT CZTI

Data Quality Report

Orbit 29271

Creation date: 2024-06-27T20:02:05.915182
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/AS1A10_045T08_9000004208_29271cztM0_level2.evt modeM0/AS1A10_045T08_9000004208_29271cztM0_level2_quad_clean.evt
Size (bytes)548,521,92081,426,240
Size523.1 MB 77.7 MB
Events in quadrant A3,160,738509,467
Events in quadrant B3,585,102515,575
Events in quadrant C4,916,482500,143
Events in quadrant D4,517,940495,916

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132471
B0146051
C0191901
D0177351

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6370721.130298%
B63711512.370115%
C63713014.724533%
D63712253.531628%

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 7225 6371 3 3 0.04% 0.05%
B 7226 6372 23 23 0.32% 0.36%
C 7226 6372 32 32 0.44% 0.50%
D 7226 6372 133 133 1.84% 2.09%

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 13 254 11934 68.0 816 801 163.7
A 5 168 9738 54.59 816 801 163.7
A 3 137 7785 42.66 816 801 163.7
B 0 229 249226 1608.5 807 786 154.5
B 10 245 101748 653.67 807 786 154.5
B 0 183 47710 303.81 807 786 154.5
C 3 233 1603442 8765.74 780 786 182.8
C 14 238 134944 733.78 780 786 182.8
C 7 247 107114 581.56 780 786 182.8
D 8 195 680059 3581.82 789 771 189.6
D 1 52 610652 3215.84 789 771 189.6
D 13 153 133203 698.3 789 771 189.6

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