ASTROSAT CZTI

Data Quality Report

Orbit 37700

Creation date: 2024-06-27T21:43:18.302953
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/AS1A11_075T01_9000005342_37700cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37700cztM0_level2_quad_clean.evt
Size (bytes)590,094,72084,263,040
Size562.8 MB 80.4 MB
Events in quadrant A3,991,062536,794
Events in quadrant B3,572,842532,171
Events in quadrant C3,180,441556,456
Events in quadrant D6,693,514479,311

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164223
B0149732
C0134332
D0244252

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6394290.453550%
B63942764.316547%
C6394260.406631%
D639480712.621207%

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 9018 6395 13 13 0.14% 0.20%
B 9018 6393 141 141 1.56% 2.21%
C 9018 6393 27 27 0.30% 0.42%
D 9019 6394 750 750 8.32% 11.73%

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 15 222 489362 3354.67 721 706 145.7
A 10 83 350571 2401.85 721 706 145.7
A 13 248 304744 2087.25 721 706 145.7
B 5 200 404925 2984.91 702 682 135.4
B 5 172 186911 1375.1 702 682 135.4
B 0 229 56788 414.28 702 682 135.4
C 15 214 288692 1756.1 708 709 164.0
C 0 10 89554 541.77 708 709 164.0
C 14 254 39314 235.41 708 709 164.0
D 12 227 3153605 19546.35 665 646 161.3
D 13 249 409661 2535.63 665 646 161.3
D 2 250 346701 2145.32 665 646 161.3

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