ASTROSAT CZTI

Data Quality Report

Orbit 00878

Creation date: 2024-06-27T14:04:11.128621
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/AS1P01_889T01_9000000138_00878cztM0_level2.evt modeM0/AS1P01_889T01_9000000138_00878cztM0_level2_quad_clean.evt
Size (bytes)277,220,16030,142,080
Size264.4 MB 28.7 MB
Events in quadrant A2,132,402193,393
Events in quadrant B2,287,956192,194
Events in quadrant C1,945,609189,331
Events in quadrant D1,890,497188,926

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A078010
B082350
C072150
D071010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A204100.000000%
B204110.048996%
C204100.000000%
D204120.097991%

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 2041 2041 12 12 0.59% 0.59%
B 2041 2041 16 16 0.78% 0.78%
C 2041 2041 4 4 0.20% 0.20%
D 2041 2041 8 8 0.39% 0.39%

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 0 117 9228 64.61 551 558 134.2
A 10 133 6097 41.28 551 558 134.2
A 11 79 2434 13.98 551 558 134.2
B 0 220 53405 378.46 579 583 139.6
B 8 38 4803 30.24 579 583 139.6
B 5 200 4476 27.89 579 583 139.6
C 3 111 9413 65.17 489 506 136.7
C 3 79 9057 62.57 489 506 136.7
C 8 208 6200 41.66 489 506 136.7
D 1 4 24214 162.16 475 492 146.3
D 8 144 15874 105.15 475 492 146.3
D 2 16 14706 97.16 475 492 146.3

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