ASTROSAT CZTI

Data Quality Report

Orbit 27685

Creation date: 2024-06-27T19:43:03.658753
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/AS1A09_038T38_9000003982_27685cztM0_level2.evt modeM0/AS1A09_038T38_9000003982_27685cztM0_level2_quad_clean.evt
Size (bytes)442,123,20096,963,840
Size421.6 MB 92.5 MB
Events in quadrant A2,556,175664,259
Events in quadrant B2,483,812675,273
Events in quadrant C2,405,020638,605
Events in quadrant D5,587,392589,900

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111530
B0108080
C0107190
D0202020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5261981.862764%
B5261711.349553%
C5261911.729709%
D526176914.616993%

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 5981 5261 31 31 0.52% 0.59%
B 5981 5261 0 0 0.00% 0.00%
C 5981 5261 0 0 0.00% 0.00%
D 5981 5261 723 723 12.09% 13.74%

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 13 248 163860 1308.38 618 604 124.8
A 13 254 9197 68.87 618 604 124.8
A 8 192 6038 43.55 618 604 124.8
B 0 230 48885 407.31 617 603 118.5
B 12 111 14517 117.38 617 603 118.5
B 11 111 12713 102.16 617 603 118.5
C 14 238 95993 687.73 589 592 138.7
C 3 233 8283 55.44 589 592 138.7
C 13 61 4191 25.94 589 592 138.7
D 1 52 1540499 11210.59 571 553 137.4
D 12 2 1141184 8303.63 571 553 137.4
D 6 112 538149 3913.62 571 553 137.4

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