ASTROSAT CZTI

Data Quality Report

Orbit 41977

Creation date: 2024-06-27T22:35:15.910476
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_104T01_9000005728_41977cztM0_level2.fits modeM0/AS1A12_104T01_9000005728_41977cztM0_level2_quad_clean.evt
Size (bytes)297,950,40090,797,760
Size284.1 MB 86.6 MB
Events in quadrant A2,829,573599,911
Events in quadrant B2,604,095610,664
Events in quadrant C2,531,470597,134
Events in quadrant D2,630,100552,869

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119903
B0117752
C0111862
D0118882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5560150.269784%
B5560801.438849%
C556030.053957%
D5560340.611511%

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 7233 5561 4 4 0.06% 0.07%
B 7233 5561 69 69 0.95% 1.24%
C 7233 5561 0 0 0.00% 0.00%
D 7233 5561 31 31 0.43% 0.56%

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 531576 4362.61 586 572 121.7
A 2 79 24185 194.0 586 572 121.7
A 13 6 7120 53.8 586 572 121.7
B 0 190 266016 2375.58 581 566 111.7
B 0 156 29645 260.24 581 566 111.7
B 5 255 20375 177.28 581 566 111.7
C 15 214 245235 1815.32 580 583 134.8
C 8 79 22881 165.45 580 583 134.8
C 13 61 3727 23.33 580 583 134.8
D 13 249 150377 1068.47 574 557 140.2
D 1 52 90734 643.11 574 557 140.2
D 12 6 61068 431.54 574 557 140.2

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