ASTROSAT CZTI

Data Quality Report

Orbit 38974

Creation date: 2024-06-27T21:58:51.785954
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/AS1A12_057T01_9000005418_38974cztM0_level2.fits modeM0/AS1A12_057T01_9000005418_38974cztM0_level2_quad_clean.evt
Size (bytes)392,212,80095,863,680
Size374.0 MB 91.4 MB
Events in quadrant A3,007,770661,190
Events in quadrant B2,868,385674,585
Events in quadrant C3,102,090643,993
Events in quadrant D5,078,390508,612

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125742
B0126511
C0130661
D0195161

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5929130.219261%
B5929621.045708%
C5929160.269860%
D592991615.449486%

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 7212 5930 8 8 0.11% 0.13%
B 7212 5930 36 36 0.50% 0.61%
C 7212 5930 10 10 0.14% 0.17%
D 7212 5930 866 866 12.01% 14.60%

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 458678 3482.61 647 634 131.5
A 9 143 36025 269.09 647 634 131.5
A 13 254 9212 65.22 647 634 131.5
B 5 172 281945 2268.35 643 626 124.0
B 0 230 37472 297.1 643 626 124.0
B 12 111 15716 121.67 643 626 124.0
C 14 254 362313 2463.03 631 635 146.8
C 15 214 262009 1779.96 631 635 146.8
C 15 208 6577 40.47 631 635 146.8
D 2 249 1545204 10894.65 575 559 141.8
D 12 227 768728 5418.03 575 559 141.8
D 1 47 159025 1117.69 575 559 141.8

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