ASTROSAT CZTI

Data Quality Report

Orbit 17200

Creation date: 2024-06-27T17:33:30.688477
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_185T04_9000002548_17200cztM0_level2.evt modeM0/AS1A05_185T04_9000002548_17200cztM0_level2_quad_clean.evt
Size (bytes)660,067,20098,032,320
Size629.5 MB 93.5 MB
Events in quadrant A3,989,898619,481
Events in quadrant B4,149,353618,102
Events in quadrant C5,871,735584,780
Events in quadrant D5,413,208565,581

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174162
B0177812
C0231922
D0219542

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83491411.688825%
B83492002.395496%
C83493374.036412%
D83495877.030782%

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 9159 8351 3 3 0.03% 0.04%
B 9159 8351 13 13 0.14% 0.16%
C 9159 8351 2 2 0.02% 0.02%
D 9159 8351 457 457 4.99% 5.47%

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 4 2 61436 292.61 1013 989 206.6
A 12 189 35790 168.46 1013 989 206.6
A 0 226 8786 37.74 1013 989 206.6
B 7 220 127152 641.13 1015 989 196.8
B 12 111 23407 113.92 1015 989 196.8
B 11 111 19834 95.77 1015 989 196.8
C 3 233 1937975 8493.38 968 974 228.1
C 14 238 148536 647.03 968 974 228.1
C 0 207 9006 35.22 968 974 228.1
D 11 176 1221078 5279.57 950 921 231.1
D 13 189 153639 660.8 950 921 231.1
D 5 222 145790 626.84 950 921 231.1

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