ASTROSAT CZTI

Data Quality Report

Orbit 37829

Creation date: 2024-06-27T21:45:01.839058
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/AS1C07_001T12_9000005352_37829cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37829cztM0_level2_quad_clean.evt
Size (bytes)427,080,96084,107,520
Size407.3 MB 80.2 MB
Events in quadrant A2,910,078549,781
Events in quadrant B3,236,201549,414
Events in quadrant C2,958,807537,216
Events in quadrant D3,446,233516,539

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121723
B0133762
C0123052
D0141432

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5629170.302007%
B56291051.865340%
C5629721.279090%
D56291502.664772%

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 7061 5630 14 14 0.20% 0.25%
B 7060 5628 89 89 1.26% 1.58%
C 7060 5628 71 71 1.01% 1.26%
D 7060 5628 154 154 2.18% 2.74%

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 371996 2960.57 624 612 125.4
A 7 3 27864 217.25 624 612 125.4
A 13 6 27027 210.57 624 612 125.4
B 5 172 344232 2914.26 618 603 117.9
B 4 171 146851 1240.31 618 603 117.9
B 0 189 115140 971.37 618 603 117.9
C 15 214 235794 1673.39 605 609 140.5
C 1 23 196469 1393.58 605 609 140.5
C 0 10 139801 990.38 605 609 140.5
D 2 249 435921 2953.2 606 589 147.4
D 12 233 256675 1737.23 606 589 147.4
D 13 249 168988 1142.38 606 589 147.4

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