ASTROSAT CZTI

Data Quality Report

Orbit 38236

Creation date: 2024-06-27T21:50:07.642591
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/AS1A07_145T01_9000005370_38236cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38236cztM0_level2_quad_clean.evt
Size (bytes)392,826,24099,020,160
Size374.6 MB 94.4 MB
Events in quadrant A3,117,787670,569
Events in quadrant B3,184,356680,578
Events in quadrant C3,030,652647,654
Events in quadrant D4,746,080583,881

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126412
B0133601
C0126511
D0181201

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A594470.117766%
B5944811.362719%
C5944190.319650%
D59442924.912517%

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 7225 5945 1 1 0.01% 0.02%
B 7225 5945 28 28 0.39% 0.47%
C 7225 5945 12 12 0.17% 0.20%
D 7225 5945 268 268 3.71% 4.51%

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 371997 2736.18 665 650 135.7
A 12 189 80666 589.58 665 650 135.7
A 0 247 73818 539.12 665 650 135.7
B 5 172 334673 2622.01 658 639 127.4
B 4 232 133158 1040.21 658 639 127.4
B 0 230 77441 602.86 658 639 127.4
C 15 214 248730 1629.97 643 646 152.2
C 14 254 106585 696.04 643 646 152.2
C 9 236 81746 532.85 643 646 152.2
D 10 203 532794 3396.31 637 618 156.7
D 2 250 433311 2761.42 637 618 156.7
D 12 233 407270 2595.23 637 618 156.7

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