ASTROSAT CZTI

Data Quality Report

Orbit 16605

Creation date: 2024-06-27T17:25:00.120255
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_16605cztM0_level2.evt modeM0/AS1C04_009T01_9000002448_16605cztM0_level2_quad_clean.evt
Size (bytes)498,640,320138,484,800
Size475.5 MB 132.1 MB
Events in quadrant A3,497,321915,522
Events in quadrant B3,921,553944,727
Events in quadrant C3,660,639921,870
Events in quadrant D3,517,523895,826

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157633
B0168982
C0157172
D0159472

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74221221.643762%
B74221702.290488%
C74221461.967125%
D7422720.970089%

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 9083 7425 61 61 0.67% 0.82%
B 9083 7425 6 6 0.07% 0.08%
C 9083 7425 0 0 0.00% 0.00%
D 9083 7425 19 19 0.21% 0.26%

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 212471 1240.25 849 831 170.6
A 15 69 11699 63.69 849 831 170.6
A 0 226 7327 38.06 849 831 170.6
B 0 189 179203 1095.15 863 842 162.9
B 15 35 136207 831.15 863 842 162.9
B 4 216 46520 280.47 863 842 162.9
C 3 233 224026 1151.43 837 842 193.8
C 14 238 129059 661.48 837 842 193.8
C 7 247 39250 198.15 837 842 193.8
D 10 70 94350 456.92 838 812 204.7
D 2 16 79000 381.93 838 812 204.7
D 1 52 76566 370.04 838 812 204.7

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