ASTROSAT CZTI

Data Quality Report

Orbit 39058

Creation date: 2024-06-27T21:59:52.752316
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_077T06_9000005430_39058cztM0_level2.fits modeM0/AS1A12_077T06_9000005430_39058cztM0_level2_quad_clean.evt
Size (bytes)396,918,72085,921,920
Size378.5 MB 81.9 MB
Events in quadrant A4,729,904572,483
Events in quadrant B2,277,712612,047
Events in quadrant C3,260,722574,669
Events in quadrant D4,037,709493,920

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175453
B0100512
C0128782
D0154142

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49703577.183099%
B4970120.241449%
C49701583.179074%
D497053910.845070%

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 6973 4971 326 326 4.68% 6.56%
B 6973 4971 3 3 0.04% 0.06%
C 6973 4971 116 116 1.66% 2.33%
D 6973 4971 422 422 6.05% 8.49%

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 15 222 1461065 13070.13 553 543 111.7
A 13 248 723317 6468.06 553 543 111.7
A 10 83 397711 3554.23 553 543 111.7
B 5 172 18558 166.79 563 548 108.0
B 0 190 16106 144.08 563 548 108.0
B 0 230 13425 119.25 563 548 108.0
C 15 208 885678 6885.71 550 553 128.5
C 15 214 208514 1617.8 550 553 128.5
C 3 233 7202 51.72 550 553 128.5
D 2 249 1149366 9029.41 526 511 127.2
D 1 47 338438 2655.93 526 511 127.2
D 12 235 254389 1995.35 526 511 127.2

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