ASTROSAT CZTI

Data Quality Report

Orbit 16523

Creation date: 2024-06-27T17:23:54.908350
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_174T01_9000002440_16523cztM0_level2.evt modeM0/AS1A05_174T01_9000002440_16523cztM0_level2_quad_clean.evt
Size (bytes)1,078,058,880152,055,360
Size1.0 GB 145.0 MB
Events in quadrant A6,664,726952,236
Events in quadrant B6,291,480972,101
Events in quadrant C12,993,209864,062
Events in quadrant D5,830,567927,359

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02600
B02600
C02600
D02600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0283414
B0269013
C0470673
D0265153

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A128642501.943408%
B128642511.951182%
C12864212316.503420%
D128641501.166045%

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 14115 12865 26 26 0.18% 0.20%
B 14115 12865 15 15 0.11% 0.12%
C 14115 12865 1528 1528 10.83% 11.88%
D 14115 12865 3 3 0.02% 0.02%

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 15 174 767022 2464.84 1528 1492 310.6
A 3 1 19734 58.74 1528 1492 310.6
A 0 226 13040 37.18 1528 1492 310.6
B 15 35 85655 284.75 1531 1490 295.6
B 4 48 55420 182.46 1531 1490 295.6
B 12 111 36651 118.96 1531 1490 295.6
C 3 233 7303325 22271.77 1397 1403 327.9
C 14 238 211827 641.82 1397 1403 327.9
C 7 247 35386 103.65 1397 1403 327.9
D 12 227 75183 201.71 1498 1452 365.5
D 2 234 51822 137.8 1498 1452 365.5
D 12 144 42091 111.18 1498 1452 365.5

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