ASTROSAT CZTI

Data Quality Report

Orbit 52099

Creation date: 2025-05-16T16:38:03.898595
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_011T07_9000006470_52099cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52099cztM0_level2_quad_clean.evt
Size (bytes)1,932,854,400126,434,880
Size1.8 GB 120.6 MB
Events in quadrant A8,702,0221,072,413
Events in quadrant B11,544,2051,093,108
Events in quadrant C19,700,210742,390
Events in quadrant D30,631,79748,587

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02600
B02581
C02603
D02602

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0111
C0111
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034874532
B043558469
C0687161406
D01013691754

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A126058256.545022%
B12599177614.096357%
C12570464636.961018%
D125651202895.726224%

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 13912 12633 590 590 4.24% 4.67%
B 13920 12631 1122 1122 8.06% 8.88%
C 13920 12602 4064 4064 29.20% 32.25%
D 13920 12596 10282 10282 73.86% 81.63%

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 3 114 1238393 3909.56 1287 1254 316.4
A 8 43 396260 1248.28 1287 1254 316.4
A 3 61 344977 1086.22 1287 1254 316.4
B 8 3 4739938 17993.89 1242 1201 263.4
B 10 254 452630 1714.16 1242 1201 263.4
B 10 44 186978 705.43 1242 1201 263.4
C 15 224 8530108 28702.16 1074 1067 297.2
C 5 80 4911934 16526.18 1074 1067 297.2
C 15 148 787457 2646.38 1074 1067 297.2
D 12 17 9709731 101392.99 334 318 95.8
D 15 94 9476689 98959.39 334 318 95.8
D 6 42 8889007 92822.37 334 318 95.8

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