ASTROSAT CZTI

Data Quality Report

Orbit 18698

Creation date: 2024-06-27T17:53:32.953105
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/AS1A05_072T04_9000002794_18698cztM0_level2.evt modeM0/AS1A05_072T04_9000002794_18698cztM0_level2_quad_clean.evt
Size (bytes)509,376,96082,169,280
Size485.8 MB 78.4 MB
Events in quadrant A3,030,506528,915
Events in quadrant B3,328,795533,864
Events in quadrant C3,095,465516,309
Events in quadrant D5,559,858484,771

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126901
B0135991
C0128741
D0205984

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6071600.988305%
B60721542.536232%
C6072811.333992%
D60715849.619503%

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 7161 6072 2 2 0.03% 0.03%
B 7162 6073 55 55 0.77% 0.91%
C 7162 6073 6 6 0.08% 0.10%
D 7161 6072 419 419 5.85% 6.90%

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 6 16 47889 305.46 764 749 154.3
A 0 13 20592 128.58 764 749 154.3
A 11 29 11831 71.81 764 749 154.3
B 10 245 234205 1641.37 754 735 142.2
B 7 220 77052 536.53 754 735 142.2
B 0 189 18648 125.93 754 735 142.2
C 14 238 114941 682.82 725 730 167.3
C 3 233 88481 524.62 725 730 167.3
C 0 207 22504 130.18 725 730 167.3
D 1 52 1542651 8873.04 715 694 173.8
D 7 238 814744 4684.37 715 694 173.8
D 12 110 473217 2719.09 715 694 173.8

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