ASTROSAT CZTI

Data Quality Report

Orbit 30494

Creation date: 2024-06-27T20:15:59.206558
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_058T04_9000004382_30494cztM0_level2.evt modeM0/AS1A10_058T04_9000004382_30494cztM0_level2_quad_clean.evt
Size (bytes)526,893,12046,457,280
Size502.5 MB 44.3 MB
Events in quadrant A2,046,766302,219
Events in quadrant B3,332,746301,470
Events in quadrant C2,119,325292,189
Events in quadrant D8,164,722205,645

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A088001
B0132191
C089351
D0272161

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4326220.508553%
B4326370.855294%
C4326481.109570%
D4326260960.309755%

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 4361 4327 0 0 0.00% 0.00%
B 4361 4327 4 4 0.09% 0.09%
C 4361 4327 4 4 0.09% 0.09%
D 4361 4327 2270 2270 52.05% 52.46%

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 8 192 13290 121.45 523 511 105.2
A 12 96 10917 98.9 523 511 105.2
A 13 254 7977 70.95 523 511 105.2
B 6 159 1169928 11791.62 515 503 99.2
B 0 229 108206 1086.0 515 503 99.2
B 12 111 12031 116.24 515 503 99.2
C 14 238 83532 707.76 498 501 117.3
C 3 233 40461 340.62 498 501 117.3
C 0 10 35688 299.93 498 501 117.3
D 12 218 5339769 79823.04 278 271 66.9
D 12 250 604082 9026.7 278 271 66.9
D 13 104 564238 8431.05 278 271 66.9

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