ASTROSAT CZTI

Data Quality Report

Orbit 52064

Creation date: 2025-05-14T06:20:50.765912
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_9000006468_52064cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_52064cztM0_level2_quad_clean.evt
Size (bytes)1,418,316,48051,860,160
Size1.3 GB 49.5 MB
Events in quadrant A7,050,582538,912
Events in quadrant B17,010,0031,565
Events in quadrant C10,529,612438,166
Events in quadrant D17,370,812101,277

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258892
B0552806
C0361542
D0563562

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7035135319.232409%
B7034702799.900483%
C7034262937.375604%
D7034602585.655388%

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 7750 7036 1189 1189 15.34% 16.90%
B 7748 7033 6816 6816 87.97% 96.91%
C 7749 7035 2270 2270 29.29% 32.27%
D 7748 7034 5880 5880 75.89% 83.59%

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 6 196 3586735 22101.64 649 633 162.3
A 8 43 295417 1816.79 649 633 162.3
A 4 3 130090 797.86 649 633 162.3
B 8 3 14935861 551447.41 115 111 27.1
B 10 254 1137589 41997.17 115 111 27.1
B 5 172 319490 11791.89 115 111 27.1
C 15 224 6595814 40541.36 589 583 162.7
C 15 215 364416 2236.51 589 583 162.7
C 13 3 342077 2099.19 589 583 162.7
D 15 94 10348801 103018.7 338 322 100.5
D 6 42 2989720 29759.34 338 322 100.5
D 12 1 1348601 13422.06 338 322 100.5

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