ASTROSAT CZTI

Data Quality Report

Orbit 20170209_G06_087T02_9000001016_level2

Creation date: 2025-11-09T12:57:28.898496
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/AS1G06_087T02_9000001016cztM0_level2.fits modeM0/AS1G06_087T02_9000001016cztM0_level2_quad_clean.evt
Size (bytes)285,871,680269,061,120
Size272.6 MB 256.6 MB
Events in quadrant A1,696,5321,547,864
Events in quadrant B1,652,8861,563,922
Events in quadrant C1,691,6941,511,912
Events in quadrant D1,450,1301,358,383

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05860
B05820
C05800
D05820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0648240
B0659700
C0649480
D0738530

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0250
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A317003501.104101%
B317473841.209563%
C317081950.614987%
D317178682.736703%

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 37841 31931 0 0 0.00% 0.00%
B 37841 31947 0 0 0.00% 0.00%
C 37841 31940 0 0 0.00% 0.00%
D 37841 31942 0 0 0.00% 0.00%

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 14 188 1706 11.24 440 410 115.3
A 0 29 1644 10.7 440 410 115.3
A 14 204 1497 9.43 440 410 115.3
B 2 9 1416 10.89 435 411 92.3
B 3 17 1157 8.08 435 411 92.3
B 12 226 1146 7.96 435 411 92.3
C 1 80 1253 7.14 446 412 117.8
C 12 241 1216 6.83 446 412 117.8
C 1 81 1216 6.83 446 412 117.8
D 3 14 1152 6.86 413 374 113.4
D 6 231 1088 6.3 413 374 113.4
D 6 83 1077 6.2 413 374 113.4

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