ASTROSAT CZTI

Data Quality Report

Orbit 24390

Creation date: 2024-06-27T19:05:29.311908
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/AS1A08_008T01_9000003596_24390cztM0_level2.evt modeM0/AS1A08_008T01_9000003596_24390cztM0_level2_quad_clean.evt
Size (bytes)694,434,240102,268,800
Size662.3 MB 97.5 MB
Events in quadrant A3,083,988707,294
Events in quadrant B3,192,210730,042
Events in quadrant C10,214,824573,148
Events in quadrant D4,120,611652,717

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129432
B0131652
C0346502
D0163222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6197250.403421%
B6197430.693884%
C6197232537.518154%
D61971903.066000%

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 7547 6198 0 0 0.00% 0.00%
B 7547 6198 1 1 0.01% 0.02%
C 7547 6198 1789 1789 23.70% 28.86%
D 7547 6198 138 138 1.83% 2.23%

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 10216 60.02 799 786 157.1
A 0 226 6881 38.8 799 786 157.1
A 3 137 6833 38.49 799 786 157.1
B 0 190 24791 161.21 804 786 148.9
B 0 230 18016 115.71 804 786 148.9
B 12 111 17071 109.36 804 786 148.9
C 7 247 7425381 48472.02 676 681 153.2
C 14 238 108414 703.33 676 681 153.2
C 2 16 28958 184.61 676 681 153.2
D 1 52 909359 4993.77 757 736 182.0
D 12 233 112173 612.46 757 736 182.0
D 7 223 64044 347.94 757 736 182.0

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