ASTROSAT CZTI

Data Quality Report

Orbit 41251

Creation date: 2024-06-27T22:26:31.655125
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_044T17_9000005636_41251cztM0_level2.fits modeM0/AS1A12_044T17_9000005636_41251cztM0_level2_quad_clean.evt
Size (bytes)480,044,160106,237,440
Size457.8 MB 101.3 MB
Events in quadrant A3,737,446717,040
Events in quadrant B3,693,949710,610
Events in quadrant C5,928,064674,029
Events in quadrant D3,887,220645,547

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154392
B0160312
C0221172
D0163782

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6737741.098412%
B67372373.517886%
C67373875.744397%
D67371512.241354%

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 8019 6738 55 55 0.69% 0.82%
B 8019 6738 183 183 2.28% 2.72%
C 8019 6738 372 372 4.64% 5.52%
D 8019 6738 140 140 1.75% 2.08%

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 620727 4268.14 708 691 145.3
A 0 8 167400 1147.57 708 691 145.3
A 6 10 131208 898.44 708 691 145.3
B 0 186 742593 5428.02 701 683 136.7
B 0 229 133095 968.76 701 683 136.7
B 5 255 37930 272.51 701 683 136.7
C 9 54 2294996 14229.24 683 686 161.2
C 0 10 362391 2243.28 683 686 161.2
C 15 214 279153 1727.04 683 686 161.2
D 13 249 517216 3088.9 693 674 167.2
D 5 222 231545 1380.6 693 674 167.2
D 2 249 225243 1342.91 693 674 167.2

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