ASTROSAT CZTI

Data Quality Report

Orbit 34794

Creation date: 2022-03-06T03:47:44.157557
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/AS1C07_004T01_9000004990_34794cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34794cztM0_level2_quad_clean.evt
Size (bytes)470,160,00062,971,200
Size448.4 MB 60.1 MB
Events in quadrant A2,474,606397,681
Events in quadrant B3,617,643392,324
Events in quadrant C2,949,797395,124
Events in quadrant D4,836,449349,302

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109083
B0141002
C0119552
D0179342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A531270.131777%
B53123646.852410%
C5312941.769578%
D53124538.527861%

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 7015 5313 1 1 0.01% 0.02%
B 7015 5313 265 265 3.78% 4.99%
C 7015 5313 78 78 1.11% 1.47%
D 7015 5313 462 462 6.59% 8.70%

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 50182 393.89 618 607 125.9
A 7 16 25536 198.07 618 607 125.9
A 13 254 9483 70.52 618 607 125.9
B 5 172 815221 7010.46 604 589 116.2
B 5 255 195374 1676.26 604 589 116.2
B 4 171 129274 1107.42 604 589 116.2
C 0 10 303061 2137.19 602 607 141.5
C 15 214 229804 1619.54 602 607 141.5
C 14 67 46245 322.49 602 607 141.5
D 8 195 1006553 7136.2 579 563 141.0
D 13 249 766124 5430.67 579 563 141.0
D 2 250 324405 2297.24 579 563 141.0

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