ASTROSAT CZTI

Data Quality Report

Orbit 16600

Creation date: 2024-06-27T17:24:55.250126
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/AS1C04_009T01_9000002448_16600cztM0_level2.evt modeM0/AS1C04_009T01_9000002448_16600cztM0_level2_quad_clean.evt
Size (bytes)437,230,080124,439,040
Size417.0 MB 118.7 MB
Events in quadrant A3,120,087840,059
Events in quadrant B3,478,360858,280
Events in quadrant C3,104,596837,237
Events in quadrant D3,130,207813,785

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132972
B0144221
C0131861
D0135411

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6004600.999334%
B60041191.982012%
C60041011.682212%
D6004861.432378%

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 7265 6006 5 5 0.07% 0.08%
B 7265 6006 34 34 0.47% 0.57%
C 7265 6006 0 0 0.00% 0.00%
D 7265 6006 36 36 0.50% 0.60%

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 15 174 140752 948.71 744 730 147.6
A 15 69 82209 552.06 744 730 147.6
A 13 248 13924 89.4 744 730 147.6
B 0 85 183192 1323.08 746 728 137.9
B 15 35 136403 983.8 746 728 137.9
B 4 48 59949 429.42 746 728 137.9
C 14 238 114948 679.28 729 734 168.1
C 3 233 78432 462.1 729 734 168.1
C 7 247 67783 398.77 729 734 168.1
D 10 70 137918 781.77 734 714 175.5
D 1 52 111214 629.62 734 714 175.5
D 2 33 35474 198.06 734 714 175.5

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