ASTROSAT CZTI

Data Quality Report

Orbit 40835

Creation date: 2024-06-27T22:21:06.873195
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_104T02_9000005572_40835cztM0_level2.fits modeM0/AS1A12_104T02_9000005572_40835cztM0_level2_quad_clean.evt
Size (bytes)316,863,36087,672,960
Size302.2 MB 83.6 MB
Events in quadrant A3,083,252585,174
Events in quadrant B2,591,725605,912
Events in quadrant C2,555,783576,963
Events in quadrant D3,097,742526,194

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124043
B0112312
C0108382
D0128142

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51401152.237354%
B5140661.284047%
C5140370.719844%
D51401633.171206%

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 7023 5141 79 79 1.12% 1.54%
B 7023 5141 37 37 0.53% 0.72%
C 7023 5141 29 29 0.41% 0.56%
D 7023 5141 121 121 1.72% 2.35%

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 491263 4216.25 563 552 116.4
A 13 248 313198 2686.29 563 552 116.4
A 2 79 56018 476.57 563 552 116.4
B 7 202 202287 1844.1 569 552 109.4
B 0 190 100822 916.59 569 552 109.4
B 4 170 28613 256.51 569 552 109.4
C 15 214 217254 1653.96 560 562 131.0
C 0 10 115228 875.22 560 562 131.0
C 14 254 29520 221.03 560 562 131.0
D 1 47 364436 2699.98 551 534 134.8
D 2 249 231273 1711.97 551 534 134.8
D 13 249 166876 1234.18 551 534 134.8

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