ASTROSAT CZTI

Data Quality Report

Orbit 01152

Creation date: 2024-06-27T14:08:19.567655
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/AS1P01_997T03_9000000216_01152cztM0_level2.evt modeM0/AS1P01_997T03_9000000216_01152cztM0_level2_quad_clean.evt
Size (bytes)1,106,305,920109,368,000
Size1.0 GB 104.3 MB
Events in quadrant A8,160,148719,401
Events in quadrant B8,703,805708,500
Events in quadrant C8,749,179695,730
Events in quadrant D7,426,575700,478

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0292013
B0308562
C0309432
D0270892

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A700440.057110%
B7004110.157053%
C7004180.256996%
D700430.042833%

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 8644 7006 142 142 1.64% 2.03%
B 8644 7006 252 252 2.92% 3.60%
C 8644 7006 288 288 3.33% 4.11%
D 8644 7006 100 100 1.16% 1.43%

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 11 79 10152 15.78 2125 2144 507.4
A 3 111 7102 9.77 2125 2144 507.4
A 13 9 6336 8.26 2125 2144 507.4
B 8 4 85781 160.67 2233 2249 519.9
B 0 220 38772 70.25 2233 2249 519.9
B 15 22 19713 33.59 2233 2249 519.9
C 15 241 317398 551.94 2047 2124 571.2
C 12 206 189510 328.05 2047 2124 571.2
C 9 83 157409 271.85 2047 2124 571.2
D 2 152 26960 40.7 1970 2045 612.2
D 13 252 19591 28.66 1970 2045 612.2
D 13 189 13954 19.45 1970 2045 612.2

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