ASTROSAT CZTI

Data Quality Report

Orbit 57704

Creation date: 2026-05-28T20:20:02.391233
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/AS1A14_125T09_9000006578_57704cztM0_level2.fits modeM0/AS1A14_125T09_9000006578_57704cztM0_level2_quad_clean.evt
Size (bytes)537,145,92097,850,880
Size512.3 MB 93.3 MB
Events in quadrant A3,134,477677,324
Events in quadrant B3,945,985721,341
Events in quadrant C6,741,735592,229
Events in quadrant D5,509,986478,251

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143640
B0162730
C0249400
D0212960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A708860.084650%
B7088801.128668%
C708883411.766366%
D7088156422.065463%

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 7088 7088 2 2 0.03% 0.03%
B 7088 7088 33 33 0.47% 0.47%
C 7088 7088 645 645 9.10% 9.10%
D 7088 7088 476 476 6.72% 6.72%

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 3 128 95483 499.48 767 747 189.7
A 4 78 22353 113.91 767 747 189.7
A 7 223 14347 71.7 767 747 189.7
B 7 0 282859 1749.39 753 723 161.3
B 4 80 189546 1170.8 753 723 161.3
B 0 155 186223 1150.2 753 723 161.3
C 15 224 3422679 17792.85 709 704 192.3
C 12 254 137614 711.88 709 704 192.3
C 14 67 118474 612.36 709 704 192.3
D 8 240 2529338 14733.46 603 576 171.6
D 7 253 162487 943.35 603 576 171.6
D 2 31 114067 661.24 603 576 171.6

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