ASTROSAT CZTI

Data Quality Report

Orbit 21471

Creation date: 2024-06-27T18:28:16.127182
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/AS1A06_005T09_9000003168_21471cztM0_level2.evt modeM0/AS1A06_005T09_9000003168_21471cztM0_level2_quad_clean.evt
Size (bytes)547,220,160105,877,440
Size521.9 MB 101.0 MB
Events in quadrant A3,623,111679,577
Events in quadrant B3,764,335690,994
Events in quadrant C3,633,122667,781
Events in quadrant D5,038,838642,145

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157473
B0160493
C0158073
D0200073

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75551171.548643%
B75561602.117522%
C75561371.813129%
D75553634.804765%

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 7855 7556 0 0 0.00% 0.00%
B 7856 7557 5 5 0.06% 0.07%
C 7856 7556 0 0 0.00% 0.00%
D 7855 7555 194 194 2.47% 2.57%

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 13 254 10066 48.04 940 920 190.4
A 3 137 8356 39.06 940 920 190.4
A 0 226 8119 37.81 940 920 190.4
B 0 190 44902 242.35 932 908 181.5
B 0 230 29146 155.56 932 908 181.5
B 12 111 22816 120.69 932 908 181.5
C 14 238 138418 648.81 897 904 211.9
C 13 61 6168 24.84 897 904 211.9
C 3 202 2045 5.38 897 904 211.9
D 13 174 840728 3821.07 899 872 219.8
D 1 20 464931 2111.32 899 872 219.8
D 13 153 117949 532.66 899 872 219.8

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