ASTROSAT CZTI

Data Quality Report

Orbit 20170511_A03_038T01_9000001218_level2

Creation date: 2025-11-13T13:47:45.848934
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/AS1A03_038T01_9000001218cztM0_level2.fits modeM0/AS1A03_038T01_9000001218cztM0_level2_quad_clean.evt
Size (bytes)840,542,400754,914,240
Size801.6 MB 719.9 MB
Events in quadrant A5,112,6324,440,485
Events in quadrant B4,943,2564,447,653
Events in quadrant C5,056,9464,247,504
Events in quadrant D4,216,7483,603,473

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01430
D01450

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01879570
B01856280
C01847430
D02472150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018280
B018240
C018240
D018280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8934112501.399134%
B8936012781.430170%
C893628430.943354%
D8912068787.717684%

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 104358 89740 0 0 0.00% 0.00%
B 104357 89761 0 0 0.00% 0.00%
C 104358 89772 0 0 0.00% 0.00%
D 104357 89390 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 0 29 4817 10.65 1330 1239 336.1
A 7 110 4082 8.46 1330 1239 336.1
A 9 19 3776 7.55 1330 1239 336.1
B 2 9 4395 12.23 1301 1233 258.6
B 2 8 3423 8.47 1301 1233 258.6
B 3 17 3326 8.09 1301 1233 258.6
C 1 80 3849 7.44 1336 1240 350.9
C 1 81 3773 7.22 1336 1240 350.9
C 12 241 3620 6.78 1336 1240 350.9
D 3 14 3127 6.43 1201 1091 316.7
D 6 231 3068 6.24 1201 1091 316.7
D 1 19 3026 6.11 1201 1091 316.7

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