ASTROSAT CZTI

Data Quality Report

Orbit 31462

Creation date: 2024-06-27T20:28:48.914101
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/AS1T04_029T01_9000004582_31462cztM0_level2.evt modeM0/AS1T04_029T01_9000004582_31462cztM0_level2_quad_clean.evt
Size (bytes)1,198,808,640168,030,720
Size1.1 GB 160.2 MB
Events in quadrant A5,892,6971,132,427
Events in quadrant B15,679,054936,416
Events in quadrant C6,711,8051,086,513
Events in quadrant D7,178,1841,067,522

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256432
B0552972
C0278592
D0297332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A125211541.229934%
B12521334026.675186%
C125213853.074834%
D125211761.405639%

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 13576 12521 0 0 0.00% 0.00%
B 13576 12521 2775 2775 20.44% 22.16%
C 13576 12521 27 27 0.20% 0.22%
D 13576 12521 70 70 0.52% 0.56%

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 13 254 20971 63.78 1527 1495 305.4
A 3 137 16300 48.48 1527 1495 305.4
A 0 226 12583 36.31 1527 1495 305.4
B 12 1 6913834 26587.35 1344 1309 260.0
B 6 159 3210028 12341.56 1344 1309 260.0
B 0 190 135324 515.46 1344 1309 260.0
C 3 233 434235 1253.42 1462 1477 345.3
C 0 10 270983 780.58 1462 1477 345.3
C 14 238 235935 679.07 1462 1477 345.3
D 8 195 1329319 3720.34 1484 1442 356.9
D 2 250 97503 269.13 1484 1442 356.9
D 7 64 76742 210.97 1484 1442 356.9

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