ASTROSAT CZTI

Data Quality Report

Orbit 31950

Creation date: 2024-06-27T20:32:41.824599
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_109T01_9000004638_31950cztM0_level2.evt modeM0/AS1A10_109T01_9000004638_31950cztM0_level2_quad_clean.evt
Size (bytes)414,115,20031,720,320
Size394.9 MB 30.3 MB
Events in quadrant A1,560,105214,155
Events in quadrant B5,255,287120,524
Events in quadrant C3,179,656203,593
Events in quadrant D2,337,224202,413

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0656283
B017952265
C011717169
D09144108

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0651
B0651
C0651
D0651

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3072431.399740%
B3065183059.706362%
C306850216.362451%
D30702407.817590%

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 3604 3075 0 0 0.00% 0.00%
B 3602 3072 1294 1294 35.92% 42.12%
C 3602 3073 39 39 1.08% 1.27%
D 3606 3076 157 157 4.35% 5.10%

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 12 96 7915 92.15 400 392 81.6
A 13 254 5882 67.25 400 392 81.6
A 13 6 5114 57.84 400 392 81.6
B 4 80 3099594 54259.0 290 282 57.1
B 6 159 727707 12734.88 290 282 57.1
B 5 172 251890 4404.85 290 282 57.1
C 3 233 1612947 18646.25 363 364 86.5
C 14 238 77576 892.8 363 364 86.5
C 14 254 28947 330.5 363 364 86.5
D 8 195 317082 3532.69 376 366 89.7
D 2 120 244230 2720.09 376 366 89.7
D 13 249 229103 2551.36 376 366 89.7

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