ASTROSAT CZTI

Data Quality Report

Orbit 17712

Creation date: 2024-06-27T17:39:55.321282
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/AS1T03_042T01_9000002630_17712cztM0_level2.evt modeM0/AS1T03_042T01_9000002630_17712cztM0_level2_quad_clean.evt
Size (bytes)448,655,04055,520,640
Size427.9 MB 52.9 MB
Events in quadrant A1,915,612379,246
Events in quadrant B2,003,063386,352
Events in quadrant C1,965,827373,735
Events in quadrant D7,427,953255,960

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A084301
B087091
C085631
D0248354

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4045200.494438%
B4045300.741656%
C4045370.914710%
D4044218954.129575%

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 5150 4046 1 1 0.02% 0.02%
B 5150 4046 2 2 0.04% 0.05%
C 5150 4046 0 0 0.00% 0.00%
D 5149 4045 1926 1926 37.41% 47.61%

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 15 174 8681 81.09 495 484 101.1
A 0 226 4455 39.28 495 484 101.1
A 3 137 3703 31.84 495 484 101.1
B 10 245 35041 362.63 493 481 95.3
B 0 189 21131 216.68 493 481 95.3
B 12 111 11288 113.4 493 481 95.3
C 14 238 74566 655.46 477 480 113.0
C 5 218 21884 189.37 477 480 113.0
C 13 61 3453 26.3 477 480 113.0
D 7 238 6055615 69650.58 351 340 86.9
D 2 234 11980 133.89 351 340 86.9
D 10 70 8986 99.45 351 340 86.9

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