ASTROSAT CZTI

Data Quality Report

Orbit 12974

Creation date: 2024-06-27T16:34:37.883881
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/AS1A04_112T01_9000001908_12974cztM0_level2.evt modeM0/AS1A04_112T01_9000001908_12974cztM0_level2_quad_clean.evt
Size (bytes)547,116,480109,514,880
Size521.8 MB 104.4 MB
Events in quadrant A4,265,379716,173
Events in quadrant B4,968,602663,454
Events in quadrant C3,346,733722,566
Events in quadrant D3,489,669702,415

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174252
B0195711
C0152311
D0154761

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73541361.849334%
B735476810.443296%
C7354460.625510%
D7354230.312755%

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 7636 7358 58 58 0.76% 0.79%
B 7636 7357 455 455 5.96% 6.18%
C 7636 7358 25 25 0.33% 0.34%
D 7636 7358 10 10 0.13% 0.14%

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 15 223 263908 1516.09 850 832 173.5
A 12 189 233102 1338.56 850 832 173.5
A 1 162 140034 802.21 850 832 173.5
B 4 239 1647340 10814.69 797 775 152.3
B 3 64 98917 644.6 797 775 152.3
B 0 219 30477 195.08 797 775 152.3
C 0 207 119593 626.41 821 822 189.6
C 8 128 9804 47.37 821 822 189.6
C 14 234 7764 36.61 821 822 189.6
D 1 52 188379 944.65 823 797 198.6
D 8 195 144130 721.81 823 797 198.6
D 14 35 30505 149.61 823 797 198.6

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