ASTROSAT CZTI

Data Quality Report

Orbit 01365

Creation date: 2024-06-27T14:11:36.148608
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/AS1G04_014T02_9000000232_01365cztM0_level2.evt modeM0/AS1G04_014T02_9000000232_01365cztM0_level2_quad_clean.evt
Size (bytes)1,271,145,600111,833,280
Size1.2 GB 106.7 MB
Events in quadrant A10,528,070710,673
Events in quadrant B10,370,027732,738
Events in quadrant C8,888,828716,337
Events in quadrant D8,209,656700,905

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0367151
B0361530
C0317620
D0297380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75612523.332892%
B7561861.137416%
C756120.026452%
D756140.052903%

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 7561 7561 846 846 11.19% 11.19%
B 7561 7561 686 686 9.07% 9.07%
C 7561 7561 274 274 3.62% 3.62%
D 7561 7561 257 257 3.40% 3.40%

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 4 32 565808 984.69 2358 2380 572.2
A 15 127 502923 874.79 2358 2380 572.2
A 15 233 133435 229.04 2358 2380 572.2
B 8 4 516947 881.03 2460 2474 583.9
B 5 249 176608 298.2 2460 2474 583.9
B 12 52 172080 290.45 2460 2474 583.9
C 15 241 239782 387.51 2192 2260 612.9
C 5 234 34048 51.86 2192 2260 612.9
C 3 111 26021 38.77 2192 2260 612.9
D 9 53 103595 151.72 2141 2220 668.2
D 10 125 51066 73.1 2141 2220 668.2
D 5 82 23851 32.37 2141 2220 668.2

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