ASTROSAT CZTI

Data Quality Report

Orbit 25992

Creation date: 2024-06-27T19:23:36.981206
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/AS1A07_068T01_9000003760_25992cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25992cztM0_level2_quad_clean.evt
Size (bytes)3,191,091,840567,604,800
Size3.0 GB 541.3 MB
Events in quadrant A22,130,0513,625,285
Events in quadrant B21,616,4923,629,260
Events in quadrant C21,443,9873,456,857
Events in quadrant D28,428,3143,404,427

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0947270
B0928140
C0923230
D01143620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0530
C0530
D0530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A447834591.024943%
B447783680.821832%
C447804831.078607%
D4477516933.781128%

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 50787 44826 109 109 0.21% 0.24%
B 50787 44813 14 14 0.03% 0.03%
C 50787 44815 2 2 0.00% 0.00%
D 50788 44814 1348 1348 2.65% 3.01%

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 0 13 971688 887.25 5474 5360 1089.1
A 8 255 74248 63.25 5474 5360 1089.1
A 13 254 65523 55.24 5474 5360 1089.1
B 10 245 184673 175.28 5416 5280 1023.5
B 12 111 128829 120.71 5416 5280 1023.5
B 11 111 115506 107.7 5416 5280 1023.5
C 14 238 841964 695.72 5191 5224 1202.7
C 3 233 189328 153.08 5191 5224 1202.7
C 0 207 174438 140.7 5191 5224 1202.7
D 1 52 6716975 5441.36 5201 5073 1233.5
D 12 233 1369325 1106.0 5201 5073 1233.5
D 7 80 367359 293.71 5201 5073 1233.5

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