ASTROSAT CZTI

Data Quality Report

Orbit 29688

Creation date: 2024-06-27T20:06:51.174311
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/AS1A10_093T01_9000004274_29688cztM0_level2.evt modeM0/AS1A10_093T01_9000004274_29688cztM0_level2_quad_clean.evt
Size (bytes)516,931,20097,364,160
Size493.0 MB 92.9 MB
Events in quadrant A3,117,397646,463
Events in quadrant B3,723,152669,162
Events in quadrant C3,825,225623,562
Events in quadrant D4,576,987584,207

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130171
B0148742
C0153871
D0177081

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6089230.377730%
B6089781.280999%
C6089911.494498%
D60892624.302841%

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 7399 6090 3 3 0.04% 0.05%
B 7399 6090 13 13 0.18% 0.21%
C 7399 6090 3 3 0.04% 0.05%
D 7399 6090 176 176 2.38% 2.89%

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 16 61456 391.24 778 763 155.1
A 0 13 38951 246.17 778 763 155.1
A 12 194 15734 96.51 778 763 155.1
B 6 159 444315 3039.47 788 769 145.9
B 0 229 142541 971.52 788 769 145.9
B 12 111 17043 111.52 788 769 145.9
C 3 233 654661 3706.49 762 769 176.4
C 14 238 126325 711.7 762 769 176.4
C 15 208 26601 146.42 762 769 176.4
D 7 80 543212 3091.98 745 727 175.4
D 8 195 480070 2732.09 745 727 175.4
D 13 104 327213 1860.86 745 727 175.4

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