ASTROSAT CZTI

Data Quality Report

Orbit 36867

Creation date: 2024-06-27T21:32:33.164358
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_075T01_9000005244_36867cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36867cztM0_level2_quad_clean.evt
Size (bytes)350,616,96059,129,280
Size334.4 MB 56.4 MB
Events in quadrant A2,608,452483,497
Events in quadrant B774,4027,423
Events in quadrant C3,162,762489,656
Events in quadrant D3,721,556451,061

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111413
B051692
C0126552
D0145112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5087180.353843%
B50875087100.000000%
C50871292.535876%
D50872765.425595%

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 6999 5088 9 9 0.13% 0.18%
B 6998 5086 0 0 0.00% 0.00%
C 6999 5088 104 104 1.49% 2.04%
D 6999 5088 265 265 3.79% 5.21%

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 235894 1939.67 597 587 121.3
A 9 143 29276 236.49 597 587 121.3
A 13 248 22270 178.74 597 587 121.3
B 12 243 705872 180569.3 11 11 3.9
B 12 144 13241 3384.42 11 11 3.9
B 5 255 1922 488.86 11 11 3.9
C 0 10 221916 1635.61 588 594 135.3
C 15 214 217564 1603.44 588 594 135.3
C 0 207 215144 1585.56 588 594 135.3
D 13 249 716118 5116.85 576 562 139.8
D 12 17 224749 1603.13 576 562 139.8
D 2 249 178918 1275.4 576 562 139.8

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