ASTROSAT CZTI

Data Quality Report

Orbit 35904

Creation date: 2022-06-09T00:02:27.411657
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/AS1A11_080T01_9000005146_35904cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35904cztM0_level2_quad_clean.evt
Size (bytes)466,320,960100,681,920
Size444.7 MB 96.0 MB
Events in quadrant A2,984,867678,322
Events in quadrant B3,457,638665,516
Events in quadrant C3,133,764665,990
Events in quadrant D4,148,356629,696

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124163
B0139392
C0125722
D0162662

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5867120.204534%
B58671492.539628%
C5867821.397648%
D58671823.102096%

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 7179 5868 3 3 0.04% 0.05%
B 7179 5868 95 95 1.32% 1.62%
C 7179 5868 46 46 0.64% 0.78%
D 7179 5868 129 129 1.80% 2.20%

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 10 83 174189 1190.12 707 694 145.8
A 15 169 53326 361.04 707 694 145.8
A 13 254 10087 64.43 707 694 145.8
B 5 172 476018 3572.33 692 676 133.1
B 5 255 141785 1060.47 692 676 133.1
B 0 213 60791 451.78 692 676 133.1
C 15 214 245813 1538.83 682 689 159.3
C 0 10 221939 1388.96 682 689 159.3
C 0 207 7414 42.22 682 689 159.3
D 8 195 409382 2454.19 677 660 166.5
D 2 250 311658 1867.4 677 660 166.5
D 12 227 282157 1690.26 677 660 166.5

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