ASTROSAT CZTI

Data Quality Report

Orbit 30675

Creation date: 2024-06-27T20:18:28.641611
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/AS1A10_094T80_9000004424_30675cztM0_level2.evt modeM0/AS1A10_094T80_9000004424_30675cztM0_level2_quad_clean.evt
Size (bytes)641,306,880122,771,520
Size611.6 MB 117.1 MB
Events in quadrant A3,007,835861,127
Events in quadrant B4,634,016847,430
Events in quadrant C3,272,970821,532
Events in quadrant D8,096,304762,732

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127081
B0185021
C0134261
D0283842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6096621.017060%
B60971262.066590%
C60971141.869772%
D609668611.253281%

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 7041 6097 5 5 0.07% 0.08%
B 7042 6098 2 2 0.03% 0.03%
C 7042 6098 2 2 0.03% 0.03%
D 7041 6097 628 628 8.92% 10.30%

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 59863 388.74 762 746 152.1
A 13 254 11172 68.56 762 746 152.1
A 8 192 9478 57.42 762 746 152.1
B 6 159 1650111 11768.42 742 723 140.2
B 4 81 32532 226.95 742 723 140.2
B 0 190 25795 178.89 742 723 140.2
C 3 233 293154 1770.4 715 719 165.2
C 14 238 118635 713.86 715 719 165.2
C 0 10 44796 266.84 715 719 165.2
D 8 195 4020256 24122.99 709 690 166.6
D 13 249 433948 2600.15 709 690 166.6
D 1 52 428886 2569.77 709 690 166.6

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