ASTROSAT CZTI

Data Quality Report

Orbit 20211102_C07_003T01_9000004754_level2

Creation date: 2025-12-29T19:01:20.354435
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/AS1C07_003T01_9000004754cztM0_level2.fits modeM0/AS1C07_003T01_9000004754cztM0_level2_quad_clean.evt
Size (bytes)898,608,960805,936,320
Size857.0 MB 768.6 MB
Events in quadrant A5,573,8284,792,355
Events in quadrant B5,298,9344,720,624
Events in quadrant C5,392,6744,512,509
Events in quadrant D4,602,3704,035,624

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018960
B018960
C018940
D018960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01882770
B02197170
C01969560
D02699070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A925691100.118830%
B9256532843.547777%
C9257110311.113740%
D9257328733.103497%

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 129749 92581 0 0 0.00% 0.00%
B 129749 92523 0 0 0.00% 0.00%
C 129749 92398 0 0 0.00% 0.00%
D 129749 92566 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 9 19 4540 8.9 1454 1370 356.2
A 7 110 4513 8.82 1454 1370 356.2
A 0 29 4408 8.53 1454 1370 356.2
B 2 9 4557 11.57 1402 1337 278.3
B 3 80 4099 9.92 1402 1337 278.3
B 2 8 3594 8.11 1402 1337 278.3
C 1 81 4389 8.48 1426 1339 359.5
C 1 80 4246 8.09 1426 1339 359.5
C 3 202 4204 7.97 1426 1339 359.5
D 10 189 3425 6.32 1316 1198 352.3
D 7 3 3401 6.25 1316 1198 352.3
D 4 160 3374 6.18 1316 1198 352.3

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