ASTROSAT CZTI

Data Quality Report

Orbit 16639

Creation date: 2024-06-27T17:25:40.902678
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/AS1C04_007T07_9000002452_16639cztM0_level2.evt modeM0/AS1C04_007T07_9000002452_16639cztM0_level2_quad_clean.evt
Size (bytes)884,335,680145,056,960
Size843.4 MB 138.3 MB
Events in quadrant A6,020,938884,858
Events in quadrant B6,433,526898,626
Events in quadrant C6,110,039879,381
Events in quadrant D7,359,809854,265

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02580
B02580
C02580
D02580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262854
B0269733
C0260573
D0303853

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A126711341.057533%
B126711541.215374%
C126711791.412675%
D126713142.478100%

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 14032 12674 2 2 0.01% 0.02%
B 14032 12674 7 7 0.05% 0.06%
C 14032 12674 1 1 0.01% 0.01%
D 14032 12673 208 208 1.48% 1.64%

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 3 1 144914 468.19 1511 1475 306.4
A 12 96 58582 186.4 1511 1475 306.4
A 0 226 13074 37.86 1511 1475 306.4
B 15 35 213166 724.47 1515 1472 292.2
B 0 214 103676 349.77 1515 1472 292.2
B 0 190 76525 256.85 1515 1472 292.2
C 14 238 221635 640.95 1456 1463 343.5
C 3 233 177288 511.85 1456 1463 343.5
C 7 247 28697 79.28 1456 1463 343.5
D 1 52 1674628 4649.37 1468 1423 359.9
D 5 222 63267 171.85 1468 1423 359.9
D 2 234 49117 132.53 1468 1423 359.9

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