ASTROSAT CZTI

Data Quality Report

Orbit 24760

Creation date: 2024-06-27T19:09:33.592518
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/AS1A07_018T08_9000003622_24760cztM0_level2.evt modeM0/AS1A07_018T08_9000003622_24760cztM0_level2_quad_clean.evt
Size (bytes)953,642,880161,219,520
Size909.5 MB 153.8 MB
Events in quadrant A6,325,0211,013,077
Events in quadrant B7,447,7891,006,656
Events in quadrant C6,518,668981,703
Events in quadrant D7,698,436971,459

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02700
B02700
C02700
D02700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272510
B0307290
C0275790
D0317640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A131651791.359666%
B131664923.736898%
C131663112.362145%
D131664783.630564%

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 14595 13169 0 0 0.00% 0.00%
B 14596 13170 154 154 1.06% 1.17%
C 14596 13170 7 7 0.05% 0.05%
D 14596 13170 141 141 0.97% 1.07%

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 12 96 50405 148.63 1625 1591 328.4
A 13 254 22122 62.51 1625 1591 328.4
A 3 137 14857 40.39 1625 1591 328.4
B 3 64 592711 1935.09 1596 1552 305.5
B 15 33 195818 635.9 1596 1552 305.5
B 0 189 130546 422.24 1596 1552 305.5
C 14 238 243977 672.97 1542 1549 360.2
C 2 16 147226 404.39 1542 1549 360.2
C 7 247 57920 156.48 1542 1549 360.2
D 12 233 559723 1463.59 1565 1514 381.4
D 1 52 445061 1162.95 1565 1514 381.4
D 7 238 335873 876.67 1565 1514 381.4

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