ASTROSAT CZTI

Data Quality Report

Orbit 21579

Creation date: 2024-06-27T18:29:44.329942
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_182T02_9000003202_21579cztM0_level2.evt modeM0/AS1A05_182T02_9000003202_21579cztM0_level2_quad_clean.evt
Size (bytes)387,247,68097,764,480
Size369.3 MB 93.2 MB
Events in quadrant A2,684,617643,166
Events in quadrant B2,791,993663,644
Events in quadrant C2,742,972642,528
Events in quadrant D3,123,610616,247

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117572
B0120402
C0119152
D0131972

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5648200.354108%
B5648370.655099%
C5648651.150850%
D5648881.558074%

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 6853 5649 0 0 0.00% 0.00%
B 6853 5649 2 2 0.03% 0.04%
C 6853 5649 0 0 0.00% 0.00%
D 6853 5649 51 51 0.74% 0.90%

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 13 254 8645 57.54 694 681 138.4
A 15 236 7093 46.33 694 681 138.4
A 0 226 5913 37.8 694 681 138.4
B 0 230 26497 196.51 699 682 131.4
B 12 111 15518 112.94 699 682 131.4
B 11 111 13291 95.98 699 682 131.4
C 14 238 108207 693.19 673 679 155.1
C 13 61 4894 27.17 673 679 155.1
C 3 233 3288 16.82 673 679 155.1
D 1 52 304151 1882.59 670 650 161.2
D 13 153 77015 473.69 670 650 161.2
D 2 136 68237 419.24 670 650 161.2

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