ASTROSAT CZTI

Data Quality Report

Orbit 15415

Creation date: 2024-06-27T17:08:13.204749
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/AS1T02_076T01_9000002274_15415cztM0_level2.evt modeM0/AS1T02_076T01_9000002274_15415cztM0_level2_quad_clean.evt
Size (bytes)479,096,64099,112,320
Size456.9 MB 94.5 MB
Events in quadrant A2,992,991673,164
Events in quadrant B3,021,001673,372
Events in quadrant C3,380,363651,116
Events in quadrant D4,735,315612,247

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124562
B0124171
C0139071
D0178671

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55991031.839614%
B5599851.518128%
C5599771.375246%
D55994928.787283%

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 6915 5601 12 12 0.17% 0.21%
B 6915 5601 6 6 0.09% 0.11%
C 6915 5601 26 26 0.38% 0.46%
D 6915 5601 354 354 5.12% 6.32%

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 14 238 80509 547.26 723 711 145.8
A 13 248 56814 384.76 723 711 145.8
A 14 237 32043 214.88 723 711 145.8
B 7 220 45621 336.49 713 698 133.5
B 10 245 36053 264.82 713 698 133.5
B 0 197 32453 237.86 713 698 133.5
C 3 233 581674 3775.45 679 683 153.9
C 7 247 138979 898.69 679 683 153.9
C 14 234 5383 30.54 679 683 153.9
D 13 122 1467485 8865.54 676 658 165.5
D 12 221 269563 1625.27 676 658 165.5
D 2 33 223752 1348.39 676 658 165.5

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