ASTROSAT CZTI

Data Quality Report

Orbit 32786

Creation date: 2024-06-27T20:41:59.701282
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/AS1T04_064T01_9000004730_32786cztM0_level2.evt modeM0/AS1T04_064T01_9000004730_32786cztM0_level2_quad_clean.evt
Size (bytes)803,318,40055,405,440
Size766.1 MB 52.8 MB
Events in quadrant A3,618,173365,215
Events in quadrant B3,791,125384,515
Events in quadrant C6,638,992306,634
Events in quadrant D9,946,652271,175

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137533
B0145392
C0229332
D0329582

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49613767.579117%
B49613166.369684%
C4961170434.347914%
D4961243048.982060%

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 7053 4962 233 233 3.30% 4.70%
B 7053 4962 204 204 2.89% 4.11%
C 7053 4962 1539 1539 21.82% 31.02%
D 7053 4962 2331 2331 33.05% 46.98%

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 15 237 931216 7196.56 657 648 129.3
A 14 238 75987 582.64 657 648 129.3
A 7 16 29833 225.7 657 648 129.3
B 5 172 756076 6113.89 667 654 123.6
B 5 200 122403 985.36 667 654 123.6
B 0 219 109332 879.57 667 654 123.6
C 0 10 4204227 32795.41 564 571 128.2
C 3 233 130781 1015.85 564 571 128.2
C 0 207 45018 346.76 564 571 128.2
D 8 195 5600750 36820.61 577 565 152.1
D 14 52 848363 5574.18 577 565 152.1
D 10 203 413309 2713.75 577 565 152.1

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