ASTROSAT CZTI

Data Quality Report

Orbit 34350

Creation date: 2022-02-04T01:34:21.274915
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/AS1A05_019T01_9000004906_34350cztM0_level2.evt modeM0/AS1A05_019T01_9000004906_34350cztM0_level2_quad_clean.evt
Size (bytes)650,422,08060,128,640
Size620.3 MB 57.3 MB
Events in quadrant A2,414,356415,036
Events in quadrant B3,720,209417,436
Events in quadrant C2,700,815403,870
Events in quadrant D10,532,742241,166

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100843
B0141712
C0107072
D0346292

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A487370.143649%
B48733647.469731%
C4873511.046583%
D4873338669.484917%

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 6996 4874 0 0 0.00% 0.00%
B 6996 4874 238 238 3.40% 4.88%
C 6996 4874 24 24 0.34% 0.49%
D 6996 4873 3221 3221 46.04% 66.10%

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 32709 265.11 608 597 121.1
A 13 6 14970 118.66 608 597 121.1
A 10 255 10428 81.16 608 597 121.1
B 5 172 813783 7330.51 593 581 110.9
B 5 255 316804 2850.55 593 581 110.9
B 0 229 124249 1114.79 593 581 110.9
C 15 214 205967 1507.99 593 601 136.2
C 0 10 112946 824.94 593 601 136.2
C 3 233 23089 165.13 593 601 136.2
D 7 223 5792841 49592.75 426 418 116.8
D 12 235 910809 7794.46 426 418 116.8
D 8 195 841576 7201.71 426 418 116.8

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