ASTROSAT CZTI

Data Quality Report

Orbit 38970

Creation date: 2024-06-27T21:58:48.375629
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_057T01_9000005418_38970cztM0_level2.fits modeM0/AS1A12_057T01_9000005418_38970cztM0_level2_quad_clean.evt
Size (bytes)327,337,92089,199,360
Size312.2 MB 85.1 MB
Events in quadrant A2,565,889609,669
Events in quadrant B2,442,940620,052
Events in quadrant C2,816,299602,552
Events in quadrant D3,917,669531,868

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106253
B0103912
C0113272
D0149492

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4802120.249896%
B4802731.520200%
C4802330.687214%
D48023156.559767%

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 6955 4803 8 8 0.12% 0.17%
B 6955 4803 55 55 0.79% 1.15%
C 6955 4803 31 31 0.45% 0.65%
D 6955 4803 334 334 4.80% 6.95%

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 391070 3515.43 555 545 111.1
A 13 254 9131 77.29 555 545 111.1
A 13 248 8712 73.52 555 545 111.1
B 5 172 233669 2224.26 554 540 104.8
B 12 111 12618 115.24 554 540 104.8
B 0 199 11796 107.39 554 540 104.8
C 14 254 251912 1981.22 550 556 126.9
C 15 214 213405 1677.7 550 556 126.9
C 3 233 152820 1200.16 550 556 126.9
D 1 47 798436 6154.88 534 522 129.6
D 12 227 462962 3567.13 534 522 129.6
D 12 6 248551 1913.22 534 522 129.6

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