ASTROSAT CZTI

Data Quality Report

Orbit 14415

Creation date: 2024-06-27T16:54:50.454907
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/AS1A04_201T03_9000002128_14415cztM0_level2.evt modeM0/AS1A04_201T03_9000002128_14415cztM0_level2_quad_clean.evt
Size (bytes)246,168,00052,142,400
Size234.8 MB 49.7 MB
Events in quadrant A1,687,410341,974
Events in quadrant B1,784,465349,041
Events in quadrant C1,952,833335,433
Events in quadrant D1,813,263326,424

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A068152
B071451
C077161
D073571

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3174260.819156%
B3174381.197227%
C3174521.638311%
D3174461.449275%

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 4515 3176 0 0 0.00% 0.00%
B 4515 3175 0 0 0.00% 0.00%
C 4515 3176 28 28 0.62% 0.88%
D 4515 3176 36 36 0.80% 1.13%

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 12 189 20821 234.06 429 421 87.2
A 8 15 10302 113.37 429 421 87.2
A 0 226 3744 38.13 429 421 87.2
B 0 189 31581 383.09 429 419 81.3
B 15 201 17190 206.18 429 419 81.3
B 0 85 17163 205.84 429 419 81.3
C 3 233 231342 2419.58 411 414 95.4
C 0 207 116842 1219.89 411 414 95.4
C 13 61 2690 23.85 411 414 95.4
D 10 199 134985 1362.23 409 398 98.8
D 2 120 66282 666.85 409 398 98.8
D 12 110 19263 190.94 409 398 98.8

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