ASTROSAT CZTI

Data Quality Report

Orbit 52909

Creation date: 2025-07-16T21:13:49.277350
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/AS1C09_011T06_9000006484_52909cztM0_level2.fits modeM0/AS1C09_011T06_9000006484_52909cztM0_level2_quad_clean.evt
Size (bytes)1,110,401,28074,877,120
Size1.0 GB 71.4 MB
Events in quadrant A18,563,2644,761
Events in quadrant B3,547,562745,956
Events in quadrant C9,252,630502,958
Events in quadrant D9,166,780497,121

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600180
B0159100
C0326790
D0324130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7411737999.568209%
B7412500.674582%
C7412199926.969779%
D7412190125.647598%

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 7411 7411 7003 7003 94.49% 94.49%
B 7412 7412 34 34 0.46% 0.46%
C 7412 7412 1611 1611 21.74% 21.74%
D 7412 7412 1518 1518 20.48% 20.48%

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 9 191 16896572 296935.45 217 211 56.9
A 12 17 459769 8076.24 217 211 56.9
A 4 238 68009 1191.48 217 211 56.9
B 4 81 91700 549.98 773 746 165.4
B 10 247 71553 428.15 773 746 165.4
B 5 185 61656 368.31 773 746 165.4
C 7 80 2695107 14911.91 658 652 180.7
C 15 224 1700389 9406.85 658 652 180.7
C 15 158 705190 3899.12 658 652 180.7
D 8 176 3016725 15526.64 675 645 194.3
D 10 172 1307056 6725.34 675 645 194.3
D 15 125 729331 3751.24 675 645 194.3

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