ASTROSAT CZTI

Data Quality Report

Orbit 25138

Creation date: 2024-06-27T19:14:17.351251
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_018T07_9000003680_25138cztM0_level2.evt modeM0/AS1A07_018T07_9000003680_25138cztM0_level2_quad_clean.evt
Size (bytes)582,923,52068,218,560
Size555.9 MB 65.1 MB
Events in quadrant A3,376,322413,501
Events in quadrant B3,399,461419,067
Events in quadrant C4,614,355393,362
Events in quadrant D5,808,530370,836

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141870
B0141620
C0185210
D0220360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6723751.115573%
B6723851.264317%
C67232323.450840%
D67235808.627101%

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 7748 6723 0 0 0.00% 0.00%
B 7748 6723 0 0 0.00% 0.00%
C 7748 6723 90 90 1.16% 1.34%
D 7748 6723 480 480 6.20% 7.14%

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 11227 59.35 873 855 174.8
A 3 137 7823 39.87 873 855 174.8
A 0 226 7533 38.21 873 855 174.8
B 12 111 20336 116.96 861 841 166.7
B 11 111 18214 104.23 861 841 166.7
B 14 111 16112 91.62 861 841 166.7
C 7 247 813261 4229.13 821 827 192.1
C 9 54 300677 1560.87 821 827 192.1
C 2 16 159926 828.19 821 827 192.1
D 1 52 1562217 8020.44 803 780 194.7
D 8 195 526033 2698.0 803 780 194.7
D 12 235 483456 2479.3 803 780 194.7

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