ASTROSAT CZTI

Data Quality Report

Orbit 38387

Creation date: 2024-06-27T21:51:54.288953
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/AS1A12_005T08_9000005380_38387cztM0_level2.fits modeM0/AS1A12_005T08_9000005380_38387cztM0_level2_quad_clean.evt
Size (bytes)400,213,440111,602,880
Size381.7 MB 106.4 MB
Events in quadrant A3,519,433761,339
Events in quadrant B3,916,267778,791
Events in quadrant C3,083,863736,018
Events in quadrant D3,814,922672,039

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141823
B0156172
C0126432
D0150382

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6177290.469484%
B6177691.117047%
C6177100.161891%
D61771091.764611%

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 9734 6179 13 13 0.13% 0.21%
B 9734 6179 31 31 0.32% 0.50%
C 9734 6179 1 1 0.01% 0.02%
D 9734 6179 74 74 0.76% 1.20%

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 10 83 431272 2886.27 740 726 149.2
A 12 16 122860 818.75 740 726 149.2
A 9 143 67730 449.17 740 726 149.2
B 0 183 735675 5233.13 730 708 140.4
B 4 21 194598 1380.54 730 708 140.4
B 0 189 49087 344.47 730 708 140.4
C 15 214 262035 1562.03 718 724 167.3
C 0 10 12980 73.26 718 724 167.3
C 13 61 4687 23.69 718 724 167.3
D 10 203 380544 2208.32 714 696 172.0
D 1 20 188837 1093.79 714 696 172.0
D 2 250 117027 676.31 714 696 172.0

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