ASTROSAT CZTI

Data Quality Report

Orbit 55405

Creation date: 2025-12-25T03:43:52.434044
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_099T01_9000006536_55405cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55405cztM0_level2_quad_clean.evt
Size (bytes)461,401,92097,842,240
Size440.0 MB 93.3 MB
Events in quadrant A4,043,564647,167
Events in quadrant B3,222,052696,940
Events in quadrant C3,188,170623,774
Events in quadrant D6,089,690515,036

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170778
B0149812
C0148856
D0230536

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68911882.728196%
B68921071.552525%
C6889440.638699%
D6891102214.830939%

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 7657 6893 169 169 2.21% 2.45%
B 7657 6893 47 47 0.61% 0.68%
C 7657 6892 20 20 0.26% 0.29%
D 7657 6893 883 883 11.53% 12.81%

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 12 115 695345 3902.35 718 701 178.0
A 4 159 357420 2003.96 718 701 178.0
A 4 3 52114 288.83 718 701 178.0
B 5 236 203783 1346.49 714 689 150.8
B 10 247 70676 464.01 714 689 150.8
B 5 185 51017 333.67 714 689 150.8
C 1 241 248254 1274.5 711 705 194.2
C 12 252 61914 315.13 711 705 194.2
C 11 244 28101 141.05 711 705 194.2
D 11 129 2802887 14951.48 657 628 187.4
D 10 181 219636 1168.52 657 628 187.4
D 8 160 95210 504.64 657 628 187.4

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