ASTROSAT CZTI

Data Quality Report

Orbit 36280

Creation date: 2022-06-14T11:09:40.356365
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_071T35_9000005184_36280cztM0_level2.evt modeM0/AS1A10_071T35_9000005184_36280cztM0_level2_quad_clean.evt
Size (bytes)564,387,84059,330,880
Size538.2 MB 56.6 MB
Events in quadrant A2,754,516365,495
Events in quadrant B3,473,826358,226
Events in quadrant C3,088,436360,688
Events in quadrant D7,390,281313,906

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116653
B0140302
C0124662
D0258652

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A568680.140696%
B56861843.236018%
C5686370.650721%
D5686141224.832923%

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 7028 5687 2 2 0.03% 0.04%
B 7028 5687 150 150 2.13% 2.64%
C 7028 5687 28 28 0.40% 0.49%
D 7028 5687 1378 1378 19.61% 24.23%

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 183461 1375.84 656 643 132.9
A 13 6 19308 140.47 656 643 132.9
A 9 143 13523 96.93 656 643 132.9
B 5 172 561539 4478.93 645 627 125.2
B 5 236 151285 1203.02 645 627 125.2
B 8 128 102100 810.27 645 627 125.2
C 15 214 239747 1586.44 638 642 150.7
C 0 10 230623 1525.9 638 642 150.7
C 0 207 120485 795.15 638 642 150.7
D 12 6 2924781 20454.54 582 565 143.0
D 12 227 1503379 10512.0 582 565 143.0
D 13 249 453541 3168.51 582 565 143.0

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