ASTROSAT CZTI

Data Quality Report

Orbit 35589

Creation date: 2022-04-28T19:29:36.451444
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_065T04_9000005098_35589cztM0_level2.evt modeM0/AS1A10_065T04_9000005098_35589cztM0_level2_quad_clean.evt
Size (bytes)581,281,92093,611,520
Size554.4 MB 89.3 MB
Events in quadrant A3,605,341603,467
Events in quadrant B4,712,275600,245
Events in quadrant C4,030,521594,870
Events in quadrant D4,796,533563,936

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148573
B0183402
C0159592
D0186742

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6775160.236162%
B67754997.365314%
C67752243.306273%
D67756329.328413%

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 9701 6777 0 0 0.00% 0.00%
B 9701 6777 297 297 3.06% 4.38%
C 9701 6777 152 152 1.57% 2.24%
D 9701 6777 187 187 1.93% 2.76%

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 15 169 354355 2204.53 792 776 160.4
A 10 83 160633 996.69 792 776 160.4
A 13 6 22455 135.17 792 776 160.4
B 5 172 1517121 10200.62 763 744 148.7
B 4 81 88088 587.56 763 744 148.7
B 4 232 61108 406.07 763 744 148.7
C 0 10 575856 3240.59 758 764 177.5
C 15 214 275410 1547.61 758 764 177.5
C 10 49 187336 1051.32 758 764 177.5
D 7 80 539405 2978.27 733 713 180.9
D 10 203 525273 2900.14 733 713 180.9
D 10 118 237615 1309.76 733 713 180.9

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