ASTROSAT CZTI

Data Quality Report

Orbit 26190

Creation date: 2024-06-27T19:25:55.306570
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_012T04_9000003784_26190cztM0_level2.evt modeM0/AS1A09_012T04_9000003784_26190cztM0_level2_quad_clean.evt
Size (bytes)527,518,080136,647,360
Size503.1 MB 130.3 MB
Events in quadrant A3,759,222908,817
Events in quadrant B3,456,466924,820
Events in quadrant C3,678,518909,691
Events in quadrant D4,594,914896,087

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158960
B0148770
C0155040
D0185960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71751642.285714%
B71761321.839465%
C71761401.950948%
D71761532.132107%

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 7450 7176 47 47 0.63% 0.65%
B 7451 7177 0 0 0.00% 0.00%
C 7451 7177 0 0 0.00% 0.00%
D 7451 7177 43 43 0.58% 0.60%

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 0 13 447003 2598.48 858 839 171.7
A 13 254 11645 62.93 858 839 171.7
A 3 137 8126 42.44 858 839 171.7
B 0 190 77843 468.8 853 829 164.3
B 0 230 26388 155.58 853 829 164.3
B 12 111 19603 114.28 853 829 164.3
C 2 16 164025 842.54 832 835 193.7
C 14 238 132995 682.33 832 835 193.7
C 3 233 125572 644.01 832 835 193.7
D 1 52 1167982 5831.61 843 822 200.1
D 13 168 99968 495.37 843 822 200.1
D 12 233 82454 407.87 843 822 200.1

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