ASTROSAT CZTI

Data Quality Report

Orbit 38666

Creation date: 2024-06-27T21:54:51.365839
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_054T01_9000005392_38666cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38666cztM0_level2_quad_clean.evt
Size (bytes)317,286,72083,577,600
Size302.6 MB 79.7 MB
Events in quadrant A2,632,609576,037
Events in quadrant B2,236,166592,797
Events in quadrant C2,489,785553,388
Events in quadrant D4,018,957477,697

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105032
B096741
C0101901
D0150741

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4714310.657616%
B471440.084854%
C4714300.636402%
D47143998.464149%

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 6836 4715 33 33 0.48% 0.70%
B 6836 4715 0 0 0.00% 0.00%
C 6836 4715 25 25 0.37% 0.53%
D 6836 4715 439 439 6.42% 9.31%

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 299559 2657.08 553 543 112.5
A 9 143 172386 1527.01 553 543 112.5
A 13 248 12338 104.81 553 543 112.5
B 5 184 34808 324.51 547 532 105.6
B 4 251 28273 262.64 547 532 105.6
B 12 111 12913 117.22 547 532 105.6
C 15 208 202858 1626.99 534 536 124.4
C 15 214 188241 1509.45 534 536 124.4
C 0 10 9678 73.52 534 536 124.4
D 13 171 935843 7320.66 523 509 127.8
D 9 49 316419 2472.56 523 509 127.8
D 10 118 164881 1286.5 523 509 127.8

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