ASTROSAT CZTI

Data Quality Report

Orbit 29647

Creation date: 2024-06-27T20:06:27.047446
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/AS1C05_019T01_9000004270_29647cztM0_level2.evt modeM0/AS1C05_019T01_9000004270_29647cztM0_level2_quad_clean.evt
Size (bytes)460,157,760112,815,360
Size438.8 MB 107.6 MB
Events in quadrant A3,098,274735,613
Events in quadrant B3,271,059760,172
Events in quadrant C3,234,763739,909
Events in quadrant D3,868,007705,510

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139202
B0142482
C0141152
D0160082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6828110.161101%
B6828440.644405%
C6828670.981254%
D6828711.039836%

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 7823 6829 0 0 0.00% 0.00%
B 7823 6829 9 9 0.12% 0.13%
C 7823 6829 2 2 0.03% 0.03%
D 7823 6829 54 54 0.69% 0.79%

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 13250 78.18 801 784 159.5
A 3 137 7689 43.3 801 784 159.5
A 0 226 6656 36.83 801 784 159.5
B 0 229 50888 329.33 810 788 152.1
B 15 33 27122 173.1 810 788 152.1
B 12 111 19015 119.81 810 788 152.1
C 14 238 128318 703.23 784 788 181.3
C 7 247 26452 141.52 784 788 181.3
C 2 114 15986 83.81 784 788 181.3
D 8 195 418408 2314.6 772 751 180.4
D 13 153 196631 1085.54 772 751 180.4
D 2 250 145709 803.34 772 751 180.4

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