ASTROSAT CZTI

Data Quality Report

Orbit 30137

Creation date: 2024-06-27T20:11:22.698518
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/AS1A10_097T03_9000004336_30137cztM0_level2.evt modeM0/AS1A10_097T03_9000004336_30137cztM0_level2_quad_clean.evt
Size (bytes)580,556,160109,840,320
Size553.7 MB 104.8 MB
Events in quadrant A3,920,044719,963
Events in quadrant B5,107,491733,933
Events in quadrant C4,332,017719,206
Events in quadrant D3,800,237717,492

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155582
B0193042
C0175662
D0153342

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62521392.223289%
B62521131.807422%
C62522073.310940%
D6252480.767754%

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 7567 6253 58 58 0.77% 0.93%
B 7567 6253 1 1 0.01% 0.02%
C 7567 6253 0 0 0.00% 0.00%
D 7567 6253 13 13 0.17% 0.21%

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 478193 2848.87 842 827 167.6
A 15 174 175258 1040.99 842 827 167.6
A 8 192 19107 109.09 842 827 167.6
B 6 159 1783562 11420.73 841 821 156.1
B 12 111 18508 113.31 841 821 156.1
B 11 111 16759 102.1 841 821 156.1
C 3 233 853389 4412.22 835 843 193.2
C 14 238 164874 848.92 835 843 193.2
C 14 254 42228 214.18 835 843 193.2
D 8 195 209399 1045.15 842 827 199.6
D 1 52 171616 855.82 842 827 199.6
D 13 168 88005 436.85 842 827 199.6

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