ASTROSAT CZTI

Data Quality Report

Orbit 37054

Creation date: 2024-06-27T21:34:39.606505
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/AS1A11_046T02_9000005274_37054cztM0_level2.evt modeM0/AS1A11_046T02_9000005274_37054cztM0_level2_quad_clean.evt
Size (bytes)568,664,64055,941,120
Size542.3 MB 53.3 MB
Events in quadrant A3,010,921341,272
Events in quadrant B3,312,164345,101
Events in quadrant C3,639,187333,030
Events in quadrant D6,879,470280,992

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121573
B0133552
C0141572
D0242752

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5609110.196113%
B56091061.889820%
C56091272.264218%
D5609136524.335889%

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 7342 5610 6 6 0.08% 0.11%
B 7342 5610 74 74 1.01% 1.32%
C 7342 5610 115 115 1.57% 2.05%
D 7342 5610 1211 1211 16.49% 21.59%

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 10 83 262916 1956.82 671 657 134.0
A 11 254 97245 720.68 671 657 134.0
A 9 143 37584 275.53 671 657 134.0
B 5 184 270069 2104.48 659 640 128.0
B 5 172 257925 2009.63 659 640 128.0
B 0 229 47171 363.45 659 640 128.0
C 10 20 418579 2812.36 639 643 148.6
C 14 254 306920 2060.98 639 643 148.6
C 15 214 239261 1605.7 639 643 148.6
D 12 17 2990126 20895.84 583 566 143.1
D 1 52 513956 3588.39 583 566 143.1
D 6 112 448628 3131.78 583 566 143.1

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